X+18=2*(X-12)这道题怎么解呢

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X+18=2*(X-12)这道题怎么解呢X+18=2*(X-12)这道题怎么解呢X+18=2*(X-12)这道题怎么解呢X+18=2*(X-12)x+18=2x-24x=4242X+18=2*(X-1

X+18=2*(X-12)这道题怎么解呢
X+18=2*(X-12)这道题怎么解呢

X+18=2*(X-12)这道题怎么解呢
X+18=2*(X-12)
x+18=2x-24
x=42

42

X+18=2*(X-12)
X+18=2X-24
18+24=2X-X
X=42

X+18=2*(X-12)
x+18=2x-24
18+24=2x-x
解得:x=42