3x + 7y = 14
Subtract 3x from each side:
7y = -3x + 14
Divide each side by 7:
y = -3/7 x + 2
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x=7
23
Can you clarify the question please? Is it (14 x 2)-1 + (1x-1) = 3x+1?
-3x + 5 = 20 -3x = 15 x = -5
If: 3x+7 = -14 Then: x = -7