Question

va rog ex 5 punctul a

Answer 1

a)3x+5-2(x+2)=8-3(1-x)

3x-2(x+2)+5=8-3(-x+1)

3x-(2x+2•2)+5=-3(-x+1)+8

3x-(2x+4)+5=3x-3+8

x+1=3x+5

(x+1)+(-1-3x)=(3x+5)+(-1-3x)

(x+1)+(-3x+1)=(3x+5)+(-3x-1)

x+1-3x-1=3x+5-3x-1

x-3x+1-1=3x-3x+5-1

-2x=4

$\frac{2x}{2} = - \frac{4}{2} \\ \\ x = - \frac{{2}^{2}}{2} \\ \\ x = - ({2}^{2-1})$

x=-2

Answer 2

a )

3 x + 5 - 2 ( x + 2 ) = 8 - 3 ( 1 - x )

3 x + 5 - 2 x - 4 = 8 - 3 + 3 x

3 x - 2 x - 3 x = 5 - 1

- 2 x = 4

x = 4 : ( - 2 )

x = - 2