Question

помогите пожалуйста срочно

Answer 1

3) 12 - 4(x-3) = 39-9x
12-4x+12 = 39-9x
24-4x = 39-9x
-4x+9x = 39-24
5x = 15
x = 5

4) 2(3x+5)-3(4x-1) = 11,8
6x+10-12x+3 = 11,8
-6x+13 = 11,8
-6x = 11,8-13
-6x = -1,2
x = 0,2

Answer 2

12-4(x-3)=39-9x
3(x-3)=39-9x
x-3+9x=39-3
8x=36+3
8x=39
x=4.8

2)2(3x+5)-3(4x-1)=11.8
6x+10-12x+3=11.8
-6x=11.8-10
-6x=1.8
x= -0.3