To solve the equation × (3 + 8) = 55, we need to simplify the expression inside the parentheses first, which gives us:
× (3 + 8) = × 11
Now we substitute × 11 back into the original equation:
× 11 = 55
To solve for ×, we divide both sides by 11:
× = 5
Therefore, the number that solves the equation × (3 + 8) = 55 is 5.