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Answer:

(3, -4)

explaination:

To solve the system of equations using substitution, we first isolate one variable in one of the equations. In this case, we can solve the second equation for x: x = 2y + 11. Next, we substitute this expression for x into the first equation: -7(2y + 11) - 2y = -13. This simplifies to -14y - 77 - 2y = -13, leading to -16y - 77 = -13. Solving for y gives us y = -4. We then substitute y back into the expression for x: x = 2(-4) + 11, which simplifies to x = 3. Therefore, the solution to the system of equations is (3, -4).

Topic: Algebra, Systems of Equations, Substitution Method

Tags: algebra systems of equations substitution method solving equations

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Solve the system of equations by substitution: -7a - 2y = -13 and x - 2y = 11

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