18+7x=2(3x-4) aljabar kls7

aljabar kls 7 (mencari nilai x)

18 + 7x = 2(3x - 4)
18 + 7x = 2(3x) + 2(-4)
18 + 7x = 6x - 8
7x - 6x = -8 - 18
x = -26

18 + 7x = 2(3x - 4) dikaliin kedalam.
18 + 7x = 6x - 8
dipindah ruas.
7x - 6x = (-8) - 18
x = -26