Question

 

Tìm x

a. x - 452 = 77 + 48

b. x + 58 = 64 + 58

c. x - 1 – 2 – 3 – 4 = 0

Answer 1

:a) x-452=77+48=126 =>x=52+126=578 

b) x+58=64+58 =>x=64 (Vì cả 2 vế cùng có 58) 

c)x-1-2-3-4=0 =>x=1+2+3+4=10 

Answer 2

a)x-452=77+48

<=>x-452=125

<=>x=125+452=577

b)x+58=64+58

<=>x=64+58-58

<=>x=64

c)x-1-2-3-4=0

<=>x-10=0

<=>x=10