SydGrahl SydGrahl

13-02-2019
Mathematics

contestada

Use substitution to solve, please.

Use substitution to solve please class=

Respuesta :

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13-02-2019

Answer:

Step-by-step explanation:

1. 4x+2y=-12

2. 3x+y=-10

subtract 3x from left n right of 2. the eqn becomes

3. y=-10-3x

substitute 3. into eqn 1.

4x+2(-10-3x)=-12

4x-20-6x=-12

2x=-20+12

x=-4

y=-10-3(-4)=2

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