To solve the equation 3(____ + 15) = 36 + 45, we can follow these steps:
Distribute the 3 on the left side of the equation:
3 * ____ + 3 * 15 = 36 + 45
Simplify the equation:
3____ + 45 = 81
Subtract 45 from both sides of the equation:
3____ = 81 - 45
Simplify the right side of the equation:
3____ = 36
Divide both sides of the equation by 3 to solve for the blank:
____ = 36 / 3
Calculate the value of the blank:
____ = 12
Therefore, the value of the blank is 12.