Tìm x :
a. 34 + x = 51
x = 51 - 34
x = 17
b. 58 - x = 19
x = 58 - 19
x = 39
c. 32 - x = 19
x = 32 - 19
x = 13
d. x - 9 = 81
x = 81 + 9
x = 89
a) \(34+x=51\)
x = 51 - 34
x = 17
b) 58 - x = 19
x = 58 - 19
x = 31
c) 32 - x = 19
x = 32 - 19
x = 13
d) x - 9 = 81
x = 81 + 9
x = 90
a. 34 + x = 51 b. 58 - x = 19 c. 32 - x = 19 d. x - 9 = 81
x = 51 - 34 x = 58 - 19 x = 32 - 19 x = 81 + 9
x = 17 x = 39 x = 13 x = 90
a) x = 51-34= 17
b) x= 58-19 = 39
c) x= 32-19= 13
d) 81+9= 90
a
x=51-34=17
b
x=58-19=39
c
x=32-19=13
d
x=81+9=100
a ) 34 + x = 51
x = 51 - 34
x = 17
b ) 58 - x = 19
x = 58 - 19
x = 39
c ) 32 - x = 19
x = 32 - 19
x = 13
d ) x - 9 = 81
x = 81 + 9
x = 90