Hello everyone!! First-degree Equation Systems - Substitution Method, in it we have examples of systems of two first-degree equations with two unknowns and to solve these examples we will use the substitution method. I hope you can clarify your doubts through the examples presented and if you liked the video click on like so that more people can view it and learn from it. Thank you and a big hug, Professor Angela Also watch the following videos here on the channel: Systems of Equations - Substitution Method: • SYSTEM OF FIRST DEGREE EQUATIONS - METHOD... First Degree Equations with Two Unknowns: • First Degree Equations with Two Unknowns... Division of a Polynomial by a Monomial: • Division of a Polynomial by a Monomial - Pr... Multiplication of Polynomials: • POLYNOMIALS - Multiplication of Polynomials... Addition and Subtraction with olinomials: • POLYNOMIALS - Addition and Subtraction with P... Degree of a Monomial and Degree of a Polynomial: • Degree of a Monomial and Degree of a Poly... Simplification of Polynomials and/or Reduction of Similar Terms: • POLYNOMIALS ∣ Simplification of Polynomials... How to clarify your doubts in mathematics: • HOW TO CLARIFY YOUR DOUBTS IN MATHEMAT... Ratio and Proportion - Part II: • Ratio and Proportion part II - Profess... Ratio and Proportion - Part I: • Ratio and Proportion - Part I - Profess... Transforming a decimal number into a fraction: • Transforming a decimal number into a fra... Transforming a fraction into a decimal number: • Transforming a fraction into a decimal n... Fraction of a whole: • Fraction of a whole - Living Mathematics... Exact Square Root of a Natural Number: • Exact Square Root of a Natural N... Decomposition of a number into prime factors: • Decomposition of a number into prime fa... Numerical Expressions with Fractions: • Numerical Expressions with Fractions - Vi... Numerical Expressions with Natural Numbers: • Numerical Expressions with the Four ... Division with Natural Numbers: • DIVISION with Natural Numbers - Profes... Multiplication with Natural Numbers: • Multiplication with Numbers Natural-Vi... Addition and Subtraction with Natural Numbers: • Addition and Subtraction with Natural N... Set of Whole Numbers: • The Set of Whole Numbers (Z) ... Multiplication and division with decimal numbers: • DECIMAL NUMBERS - Multiplication and Di... Addition and subtraction with decimals: • DECIMAL NUMBERS - Addition and Subtraction... Multiplication and Division of fractions: • FRACTION - Multiplication and Division with ... Addition and Subtraction of fractions: • FRACTION - Addition and Subtraction - Profes... Percentage: • PERCENTAGE - Professor Angela Mathematics... GCD - Least Common Multiple: • GCD PROBLEMS - Professor Angela... GCD - Greatest Common Divisor: • GCD BY EUCLID'S ALGORITHM - VIVE... What is a fraction: • What is a FRACTION? Teacher Angela... Equivalent fractions: • Equivalent Fractions - Living the ma... Simplifying fractions: • Simplifying Fractions - Teacher... Mixed numbers: • Mixed Numbers - Teacher Angela Ma... Geometric shapes with clay: • Geometric Figures with Clay - Es... It is important to emphasize that so far the videos on this channel do not receive any sponsorship, they are made with my own resources. Teacher Angela Pereira Correia