Question

x-3.5乘以0.8=7.2 280除以4x等于14解方程

Answer 1

x-3.5乘以0.8=7.2

x=7.2+3.5乘以0.8

x=7.2+2.8

x=10

280除以4x等于14

14×4x=280

56x=280

x=280÷56

x=5