5=4х-3х ...х+3=3х-7 ....3-(х-1)=0

Question

5=4х-3х ...х+3=3х-7 ....3-(х-1)=0

Answer 1

5=4х-3х

5=х

 

х+3=3х-7

х-3х=-7-3

-2х=-10

х=5

 

3-(х-1)=0

3-х+1=0

-х=-3-1

х=4