Question

4c + 8 = 20 can solve this

Answer 1

You are solving for the variable (c).

Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS (Parenthesis, Exponents (& roots), Multiplication, Division, Addition, Subtraction)

First, subtract 8 from both sides

4c + 8 (-8) = 20 (-8)

4c = 20 - 8

4c = 12

Next, to fully isolate the variable (c), divide 4 from both sides

(4c)/4 = (12)/4

c = 12/4

c = 3

3 is your answer for c.

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Answer 2

Answer:

$c = 3$

Step-by-step explanation:

$4c + 8 = 20 \\ 4c = 20 - 8 \\ 4c = 12 \\ \frac{4c}{4} = \frac{12}{4} \\ c = 3$