Question

ПОИОГИТЕ ПОЖАЛУЙСТА=)
Решите уравнение:
6х=36.
4х-28=0.
3х+2=-19.
5-9х=-13.
3х-12=-х+6.
6+2х=-х+15.
2х/3+х/4=11/12.
2(х-2)/7=-3.
1/3(х-1)+1/2(х+3)=12.
3-х/5=8+3х/2.

Answer 1

$6x=36\x=36:6\x=6\\4x-28=0\4x=28\x=28:4\x=7\\3x+2=-19\3x=-19-2\3x=-21\x=-21:3\x=-7\\5-9x=-13\-9x=-13-5\-9x=-18\x=-18:(-9)\x=2\\3x-12=-x+6\3x+x=6+12\4x=18\x==18:4\x=4.5\\6+2x=-x+15\2x+x=15-6\3x=9\x=9:3\x=3\\frac{2x}3+frac x4=frac{11}{12}\frac{8x+3x}{12}=frac{11}{12}\frac{11x}{12}=frac{11}{12}\x=frac{11}{12}:frac{11}{12}\x=1\\frac{2(x-2)}7=-3\2x-4=-3cdot7\2x-4=-21\2x=-21+4\2x=-17\x=-17:2\x=-8.5$

$frac13(x-1)+frac12(x+3)=12;;;;times6\2(x-1)+3(x+3)=72\2x-2+3x+9=72\5x+7=72\5x=72-7\5x=65\x=13$

Answer 2

х=6

4х=28

х=7

3х=-21

х=-7

-9х=-18

х=2

3х+х=6+12

4х=18

х=4,5

2х-х=15-6

х=11