(3-5)(56+7)=-126

Let's solve the equation step by step to see if it's correct.

1. Calculate the expression inside the first parentheses: \( 3 - 5 = -2 \)

2. Calculate the expression inside the second parentheses: \( 56 + 7 = 63 \)

3. Now multiply the two results: \( -2 \times 63 = -126 \)

So, the equation \((3-5)(56+7) = -126\) is indeed correct.