42-3(2c+5)=

Solution for 42-3(2c+5)= equation:

Simplifying
42 + -3(2c + 5) = 0

Reorder the terms:
42 + -3(5 + 2c) = 0
42 + (5 * -3 + 2c * -3) = 0
42 + (-15 + -6c) = 0

Combine like terms: 42 + -15 = 27
27 + -6c = 0

Solving
27 + -6c = 0

Solving for variable 'c'.

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

Add '-27' to each side of the equation.
27 + -27 + -6c = 0 + -27

Combine like terms: 27 + -27 = 0
0 + -6c = 0 + -27
-6c = 0 + -27

Combine like terms: 0 + -27 = -27
-6c = -27

Divide each side by '-6'.
c = 4.5

Simplifying
c = 4.5