Question

4x+3*0.7=6.5 95%x-2／5x=55 4x-1.6=36

Answer 1

1、

4x+2.1=6.5

4x=6.5-2.1

4x=4.4

x=1.1

2、

0.95x-0.4x=55

0.55x=55

x=55÷0.55

x=100

3、

4x=36+1.6

4x=37.6

x=37.6÷4

x=9.4