Question

5. Реши уравнения.
x + (26 +15) = 56
5•а = 45
c - (47-27) =59
b:5=8
99 - a = 100-82
32:x=4

Answer 1

Ответ:

1) x + (26 + 15) = 56
26 + 15 = 41
x + 41 = 56
x = 56 - 41
x = 15

2) 5 * a = 45
(5 * a) / 5 = 45 / 5
a = 9

3) c - (47 - 27) = 59
47 - 27 = 20
c - 20 = 59
c = 59 + 20
c = 79

4) b / 5 = 8
(b / 5) * 5 = 8 * 5
b = 40

5) 99 - a = 100 - 82
99 - a = 18
-a = 18 - 99
-a = -81
(-a) * (-1) = (-81) * (-1)
a = 81

6) 32 / x = 4
(32 / x) * x = 4 * x
32 = 4x
32 / 4 = (4x) / 4
8 = x
x = 8