Verified answer

№ 1

(8х+11)-13=9х-5

8х + 11 - 13 = 9х - 5

9х - 8х = 5 - 2

х = 3

№ 2

2=(3х+5)=(7-4х) - уточни условие :)

№ 3

8х+5=119+(7-3х)

8х + 5 = 119 + 7 - 3х

8х + 3х = 126 - 5

11х = 121

х = 11

Verified answer

1) (8x+11)-13=9x-5

     8x-9x=13-11-5

     -x=-3

      x=3

2) 2+(3x+5)=(7-4x)

    4x+3x=7-5-2

    7x=0

    x=0

3) 8x+5=119+(7-3x)

    11x=121

     x=11