Question 238689
6x+2y-4=0
6x+2y=4 multiply this equation by -7
10x+7y=-8 multiply this equation by 2 & add.
-42x-14y=-28
20x+14y=-16
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-22x=-44
x=-44/-22
x=2 ans.
6*2+2y-4=0
12+2y-4=0
2y=4-12
2y=-8
y=-4 ans.
Proof:
10*2+7*-4=-8
20-28=-8
-8=-8