Помогите решить 1)8x-14=7x=12 2) -27x+220=5x 3)7x=-310+3x 4)25-3x=9-5x 5)3(4x-8)=3x-6
Ответ:
Пошаговое объяснение:
1) 8x-14=7x-12
8x - 7x = 14-12
x=2
2) -27x+220=5x
220 = 5x + 27x
220 = 32x
x = 220 : 32
x = 6.875
3) 7x=-310+3x
7x - 3x = - 310
4x = - 310
x = - 310 : 4
x = -77.5
4) 25-3x=9-5x
5x - 3x = 9-25
2x = - 16
x = - 16 :2
x = - 8
5) 3(4x-8)=3x-6
12x - 24 = 3x - 6
12x -3x = 24-6
9x = 18
x = 18 : 9
x = 2