Answer :

mpanderla95
To solve this expression simply divide the value 3 and the remaining would be.

X + 5 =7

X = 2.

The value of x is 2.

Hello!

To solve for x, first, you need to use the distributive property. Then, you use SADMEP, which is subtraction, addition, division, multiplication, exponents and parentheses, when solving algebraic equations only.

3(x + 5) = 21 (use the distributive property)

3x + 15 = 21 (subtract 15 from both sides)

6 = 3x (divide both sides by 3)

x = 2

If you were to take a test or quiz, always check your work. In this case, we found that x = 2, so we should substitute 2 into the original equation and see if both sides are equivalent. Remember to use PEMDAS for this.

3(x + 5) = 21, x = 2

3((2) + 5) = 21

3(7) = 21

21 = 21 | This is equal!

Therefore, x = 2.

Other Questions