2乘以(X+12.5)=34
问题描述:
2乘以(X+12.5)=34
答
2乘以(X+12.5)=34
2x+25=34
2x=34-25
2x=9
x=4.5
2乘以(X+12.5)=34
2乘以(X+12.5)=34
2x+25=34
2x=34-25
2x=9
x=4.5