a.1075+x-216=2486
1075+x=2486+216
1075+x=2702
x=2702-1075
x=1627
b.x+1950:5=1102
x+1950=1102*3
x+1975=3306
x=3306-1975
x=1331
a) 1075 + X-216=2486
X - 216=2486-1075
X -216=1411
X =1411 +216
X = 1627
Vậy X = 1627
b) X + 1950 : 3 =1102
X + 650 = 1102
X = 1102 - 650
X =452
Vậy x = 452
Tk mk nha bn !!!
a)1075+X-216=2486
X-216=2486-1075
X-216=1411
X =1411+216
X =1627
b)X+1950:3=1102
X+ 650 =1102
X =1102-650
X =452
a ) 1075 + X - 216 = 2486
1075 + X = 2486 + 216
1075 + X = 2702
X = 2702 + 1075
X = 3777
b ) X + 1950 : 3 = 1102
X + 650 = 1102
X = 1102 - 650
X = 552