Question

x÷7+3×0.9=4 3（0.72-x+1）=4.8(解方程)

Answer 1

x÷7+3×0.9=4

x/7+2.7=4

x/7=4-2.7

x/7=1.3

x=1.3×7

x=9.1

3（0.72-x+1）=4.8

0.72-x+1=4.8/3

1.72-x=1.6

x=1.72-1.6

x=0.12