a/ x + 22 - 33 = 44 + 11
x +22 - 33 = 55
x + 22 = 33 + 55
x + 22 = 88
x = 88 - 22
x = 66
b/ x - 10 + 20 = 10 + 10
x - 10 + 20 = 20
x - 10 = 20 - 20
x - 10 = 0
x = 0 + 10
x = 10
a) x + 22= 44 + 11 + 33
x+ 22= 88
x= 88-22= 66
b) x-10= 10+10-20
x-10=0
x=10
a.x+22-33=55
x+22=88
x=88-22
x=66
b.x-10+20=10+10
x-10+20=20
x-10=0
x=10
k mik nha ^_^
a , x + 22 - 33 = 44 + 11
x + 11 = 55
x = 55 - 11
x = 44 .
b , x - 10 + 20 = 10 + 10
x - 30 = 20
x = 20 + 30
x = 50 .
K mik nhoa !! ^-^ ""