ashlynestrada91 ashlynestrada91

13-01-2021
Mathematics

contestada

Please help me its about Solving by substitution

Please help me its about Solving by substitution class=

Respuesta :

DorothySapp DorothySapp

13-01-2021

Step-by-step explanation:

x=y+7

3x+2y=6

so wherever you see X you but y+7

3(y+7)+2y=6

3y+21+2y=6

group like terms

3y+2y=6-21

5y=-15

divide by 5

y=-3

to find x sub the y value in the equation

x=y+7

x=-3+7

x=4

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