1) 8x + 3(7 - 2x) = 4x + 8x + 21 - 6x = 4x + 2x + 21 = 4x + 2x - 4x = 3 - 2-2x = -1x = -18 / -x = 9
2) 23 - 4(3x + 8) = 1 - 1723 - 12x - 32 = 1 - 17-12x = 1 - 17x - 23 + 3-12x = -17x + 117x - 12x = 15x = 1x = 10 / x = 2
Итак, решением уравнений будут1) x = 2) x = 2
1) 8x + 3(7 - 2x) = 4x +
8x + 21 - 6x = 4x +
2x + 21 = 4x +
2x - 4x = 3 - 2
-2x = -1
x = -18 / -
x = 9
2) 23 - 4(3x + 8) = 1 - 17
23 - 12x - 32 = 1 - 17
-12x = 1 - 17x - 23 + 3
-12x = -17x + 1
17x - 12x = 1
5x = 1
x = 10 /
x = 2
Итак, решением уравнений будут
1) x =
2) x = 2