a, (x - 35)-120=0
x-35=120+0
x-35=120
x=120+35
x=155
b,156-(x+61)=82
x+61=156-82
x+61=74
x=74-61
x=13
c,124+(188-x)=217
188-x=217-124
188-x=93
x=188-93
x=95
a) ( x - 35 ) - 120 = 0
x - 35 = 0 + 120
x - 35 = 120
x = 120 + 35
x = 155
b) 156 - ( x + 61 ) = 82
x + 61 = 156- 82
x + 61 = 74
x = 74 - 61
x = 5
c) 124 + ( 188 - x ) = 217
188 - x = 217 - 124
188 - x = 93
x = 188 - 93
x = 95
K MK NHA BẠN, MK CHẮC ĐÚNG LUN ĐÓ NHA, THANK BẠN NHÌU
a) (x-35)-120=0 b)156-(x+61)=82 c)124+(188-x)=217
=>X-35=0+120=120 =>x+61=156-82=74 =>188-x=217-124=93
=>X=120+35=155 =>x=74-61=13 =>x=188-93=95 ai thấy dung k nha :)))