b, -32 - ( x - 5) = 0
=> -32 - x + 5 = 0 => -27 - x = 0
x = -27
c, -12 + (x - 9) = 0
=> -12 + x - 9 =0 => x - 21 = 0
x = 21
d, 11 + (15 - x) = 1
=> 11 + 15 - x = 1 => 26 - x = 1
x = 25
Tìm x:
b/ - 32 - (x – 5) = 0
x – 5 = -32 - 0
x – 5 = -32
x = -32 + 5
x = -27
c/ - 12 + (x – 9) = 0
x – 9 = 0 + 12
x - 9 = 12
x = 12 + 9
x = 21
d/ 11 + (15 – x) = 1
15 – x = 1 - 11
15 – x = -10
x = 15 - (-10)
x = 25