hayleyratliff hayleyratliff

17-08-2018
Mathematics

contestada

Solve the equation using elimination and describe your steps.

x = y - 3
2x + y = 12

Please help I have been trying to figure this out and I can't.

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kevinsanjula02pdk18m kevinsanjula02pdk18m

17-08-2018

A : x = y - 3
B : 2x + y = 12

from A to B

2(y-3) + y = 12
2y - 6 + y = 12
3y = 18
y = 6

y = 6 to A

x = y - 3
x =6 -3
x=3

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