Question

giúp tui 
 

Tìm x, biết:

a) (x- 25)-175 = 0;

b) 485 - ( 6.x + 60) = 5

c) 315 + (135 - x) = 450;

d) 346 + ( 210 - x) = 556

Answer 1

a,(x-25)-175=0
x-25=175
x=175+25
x=200

b,

c,315+(135-x)=450
135-x=135
x=135-135
x=0

d,346+(210−x)=556

Answer 2

a,(x-25)-175=0
x-25=175
x=175+25
x=200

b,

c,315+(135-x)=450
135-x=135
x=135-135
x=0

d,346+(210−x)=556

             210-x=210

                    x=0