1) (31+x) - 18 = 2331 + x - 18 = 23x + 13 = 23x = 23 - 13x = 10
2) (x8) 4 = 648x * 4 = 6432x = 64x = 64 / 32x = 2
3) x/4 = 45 - 28x/4 = 17x = 17 * 4x = 68
4) a + 64 = 31 * 3a + 64 = 93a = 93 - 64a = 29
Ответы:1) x = 102) x = 23) x = 684) a = 29
1) (31+x) - 18 = 23
31 + x - 18 = 23
x + 13 = 23
x = 23 - 13
x = 10
2) (x8) 4 = 64
8x * 4 = 64
32x = 64
x = 64 / 32
x = 2
3) x/4 = 45 - 28
x/4 = 17
x = 17 * 4
x = 68
4) a + 64 = 31 * 3
a + 64 = 93
a = 93 - 64
a = 29
Ответы:
1) x = 10
2) x = 2
3) x = 68
4) a = 29