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14-01-2021
Mathematics

contestada

What is the solution for the system of equations?

Use the substitution method to solve.

2x+y=20
−5y=−6x+12

Respuesta :

kartoziamariam5 kartoziamariam5

14-01-2021

2x+y=20
-2x on both sides
y=20-2x

-5(20-2x)=-6x+12
-100+10x=-6x+12
10x+6x=12+100
16x=112
x=7

Substitute x with 7
2(7)+y=20
14+y=20
y=20-14
y=6

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