Уравнение 1) 12-3x=48+3x 2) - 2x-17=-5x+34 3) 24+3x=-2x-26 4) - 13-7x=-5x-15 5) 7,5-1,2x=0,8x-3,5 6) 2,4x-15=0,4x-12 7) 5x+8=-13-2x

1) 12-3x=48+3x

-3 х-3 х=48-12

-6 х=36

х=36: (-6)

х=-6

2) - 2x-17=-5x+34

-2 х+5 х=34+17

3 х=51

х=51:3

х=17

3) 24+3x=-2x-26

3 х+2 х=-26-24

5 х=-50

х=-50:5

х=-10

4) - 13-7x=-5x-15

5 х-7 х=13-15

-2 х=-2

х=-2:2

х=-1

5) 7,5-1,2x=0,8x-3,5

-1.2 х-0.8 х=-3.5-7.5

-2 х=-11

х=-11: (-2)

х=5.5

6) 2,4x-15=0,4x-12

2.4 х-0.4 х=15-12

2 х=3

х=3:2

х=1.5

7) 5x+8=-13-2x

5 х+2 х=-13-8

7 х=-21

х=-21:7

х=-3