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3 years ago

5

8x = 2y + 5 3x = y + 7 Solve the system of equations by substitution.

1 answer:

jasenka [17]3 years ago

8 0

<span>3x = y + 7
</span><span> y =3x-7
</span>
<span>8x = 2y + 5
</span><span>8x = 2(3x-7) + 5
8x=6x-14+5
8x-6x=-9
2x=-9
x=-4.5

</span><span>8x = 2y + 5
</span>8(4.5)=2y+5
36=2y+5
2y=31
y=15.5

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