X-18=(X+30)怎么解打错了,是(X+30)*五分之二=X-18怎么解
问题描述:
X-18=(X+30)怎么解
打错了,是(X+30)*五分之二=X-18怎么解
答
x-18=[x+30]
x-18+18=x+30+18
x=x+48
x=x+48-48
x=0