12) 5(x+3)=2(x-6)
5x+15=2x-12
5x-2x=-12-15
3x=-27
x=-27÷3
x=-9
(C)
13) 3x+4=5x-8
maka nilai x+5=....?
3x+4=5x-8
3x-5x=-8-4
-2x=-12
x=6
x+5=6+5
=11
(A)
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12) 5(x+3)=2(x-6)
5x+15=2x-12
5x-2x=-12-15
3x=-27
x=-27÷3
x=-9
(C)
13) 3x+4=5x-8
maka nilai x+5=....?
3x+4=5x-8
3x-5x=-8-4
-2x=-12
x=6
x+5=6+5
=11
(A)