Question

解方程：过程要写的；①3（2x-6）=4.2 ② 3.6+x-0.4x=6.42 ③ 4+（35-x）÷2=10 ④8（

Answer 1

3*(2x-6)=4.2 3.6+x-0.4x=6.42 4+(35-x)/2=10 8(x-1.5)=x+0.6

6x- 18=4.2 0.6x=2.82 35/2-x/2=6 8x-12=x+0.6

6x=22.2 x=4.7 35-x=12 7x-=12.6

x=3.7 x=23 x=1.8