2乘于(x-9.7)=34.

问题描述:

2乘于(x-9.7)=34.

2x--19.4=34.2
x=26.8

x-9.7=17.1
x=26.8

2乘于(x-9.7)=34.2
2x-19.4=34.2
2x=34.2+19.4
2x=53.6
x=26.8

2(x-9.7)=34.2
x-9.7=17.2
x=17.2+9.7
x=26.9