Question

2x+3.6X2=12.7 3(x+3.6)=18.6 x+3.5x=13.5 解方程

Answer 1

2x+3.6X2=12.7中,是3.6x还是3.6乘上2?

（x+3.6）=18.6/3

x+3.6=6.2

x=6.2-3.6

x=2.6

x+3.5x=13.5

(1+3.5)x=13.5

4.5x=13.5

x=3