ladybuguser123
ladybuguser123 ladybuguser123
  • 11-04-2024
  • Mathematics
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Solving systems by substitution

Solving systems by substitution class=

Respuesta :

frangkris frangkris
  • 11-04-2024

Answer:

Step-by-step explanation:

First, try to make the equations with one variable on one side.

2x + 3y = -10

y = -7x + 3.

The second equation already does this for us. We take this value for y, and substitute it in the first equation for y.

2x + 3(-7x + 3) = -10

Simplify.

2x -21x + 9 = -10

-19x = -19

-x = -1

x = 1.

Then, with this value for x, solve for y.

y = -7(1) + 3

y = -7 + 3

y = -4.

Therefore your system of equations results in values x = 1, and y = -4.

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