7x-33=-x-1 напишите ответы пжл 5x+4x+8=620 5x-4x+80=160 -20x+15-x=-17-1 8x-24=10x+2...

Question

7x-33=-x-1 напишите ответы пжл 5x+4x+8=620 5x-4x+80=160 -20x+15-x=-17-1 8x-24=10x+2 -8x-12+5x=3x

Answer 1

1) 7x - 33 = x - 1

7x - x = -1 + 33

6x = 32

x = 16/3 (5 1/3)

2) 5x + 4x + 8 = 620

9x + 8 = 620

9x = 620 - 8

9x = 612

x = 68

3) 5x - 4x + 80 = 160

x + 80 = 160

x = 160-80

x = 80

4) -20x + 15 - x = 17 - 1

-21x + 15 = 16

-21x = 16 - 15

-21x = 1

x = - 1/21

5) 8x - 24 = 10x + 2

8x - 10x = 2 + 24

-2x = 26

x = -13

6) -8x - 12 + 5x = 3x

-3x - 12 = 3x

-3x - 3x = 12

-6x = 12

x = -2