Question

c. 3(6 - x) + 2x = 15 for x
hint (c):

Explanation:

Step1: Expand the left-hand side

$3(6-x) + 2x = 18 - 3x + 2x$

Step2: Combine like terms

$18 - 3x + 2x = 18 - x$

Step3: Isolate the variable term

$18 - x = 15 \implies -x = 15 - 18$

Step4: Solve for x

$-x = -3 \implies x = 3$

Answer:

$x=3$