Answer:
Explanation:
We multiply equation (1) by -4:
-x+3y=-24 |*(-4)
-x*(-4)+3y*(-4)=-24*-(-4)
4x-12y=96. (3) ⇒
We summarize equations (2) and (3):
Make x the subject in (1)
Sub into (2)
Sub into (3)
Hence
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