Question

4(5c + 3) and 9c + 7

Answer 1

Answer:

Simplifying

4(5c + 3) = 9c + 7

Reorder the terms:

4(3 + 5c) = 9c + 7

(3 * 4 + 5c * 4) = 9c + 7

(12 + 20c) = 9c + 7

Reorder the terms:

12 + 20c = 7 + 9c

Solving

12 + 20c = 7 + 9c

Solving for variable 'c'.

Move all terms containing c to the left, all other terms to the right.

Add '-9c' to each side of the equation.

12 + 20c + -9c = 7 + 9c + -9c

Answer 2

Simplifying :

$4(5c + 3) = 9c + 7$

$12 + 20c = 7 + 9c$

Add '-9c' to each side of the equation :

$12 + 20c + -9c = 7 + 9c + -9c$

$20c + -9c = 11c$

$12 + 11c = 7 + 9c + -9c$

Add '-12' to each side of the equation :

$12 + -12 + 11c = 7 + -12$

$11c = 7 + -12$

$11c = -5$

$c = - \frac{11}{5}$