2(x+3)=20
what does this equal??

x= 7

Step-by-step explanation:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation

2*(x+3)-(20)=0

STEP

1

:

Equation at the end of step 1

 2 • (x + 3) -  20  = 0

STEP

2

:

STEP

3

:

Pulling out like terms

3.1     Pull out like factors :

  2x - 14  =   2 • (x - 7)

Equation at the end of step

3

:

 2 • (x - 7)  = 0

STEP

4

:

Equations which are never true:

4.1      Solve :    2   =  0

This equation has no solution.

A a non-zero constant never equals zero.

Solving a Single Variable Equation:

4.2      Solve  :    x-7 = 0

Add  7  to both sides of the equation :

                     x = 7

answer: 12

step-by-step explanation:

4 and 5)16.97 or 12√2

6)15.59 or 9√3

7)y = 15.59 or 9√3     x =27

8)17.80