Question

帮我解这两道题的方程.【x+1.5】×2=9x-0.8x=10

Answer 1

【x+1.5】×2=9

x+1.5=9÷2=4.5

x=4.5-1.5

x=3

x-0.8x=10

0.2x=10

x=10÷0.2

x=5