x+5-3=4

10-x+3=4+3+1

tìm x

2 câu trả lời

a)x=4+3-5

x=2

b)10-x+3=8

10-x=8-3

10-x=5

x=10-5

x=5

x+5-3=4

x+5   =4+3

x+5   =7

x       =7-5

x       =2

Vậy x=2

10-x+3=4+3+1

10-x+3=8

10-x    =8-3

10-x    =5

     x    =10-5

     x    =5

Vậy  x=5