x/12*5=40 x*5=12*40 x+40=12*5

Question

x/12*5=40 x*5=12*40 x+40=12*5

Answer 1

x+40=12*5

x+40=60

x=60-40

x=20

 

 

x/12*5=40

x/12=40/5

x/12=8

x=8*12

x=96

Answer 2

х:12·5=40

х :12=40:5

х:12=8

х=12·8

х=96

_______

96:12·5=40

      40=40

х·5=12·40

х·5=480

х=480:5

х=96

_________

96·5=12·40

    480=480

х+40=12·5

х+40=60

х=60-40

х=20

__________

20+40=12·5

     60=60