Question

Do this equation :
3x + 2(x+2) = 20 - (2x - 5)
and also check the following equation ​

Answer 1

Step-by-step explanation:

$3x+2(x+2)=20-(2x-5)$

$3x+2x+4=20-2x+5$

$5x+4=25-2x$

$5x+2x=25-4$

$7x=21$

$x=\frac{21}{7}$

$x=3$

now, to check we will put x=3 in the eq.

LHS=3(3)+2(3+2)

      =9 + 2 X 5

      = 9+10

      =19

RHS= 20-(2X3-5)

       = 20-(6-5)

       = 20-1

       = 19

as LHS = RHS

therefore,

equation  is correct

Answer 2

3x+2(x+2)=20-(2x-5)
3x+2x+4=20-2x+5
5x+2x=20-4+5
7x=16+5
7x=21
X=21/7
X=3