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2x - y = -3
------------------- x1
x2
4x-3y=1
4x-2y=-6
------------------- -
y = 7
4x-3y = 1
4x-3(1) = 1
4x-3=1
4x=1+3
x=4
makanya,, 4x + 3y
4 (4) + 3 (7)
16 + 21
37
smoga brmanfaat,, mohon jadikan yg trbaik