Answer: 63 + 28= 91
Step-by-step explanation: 7(9+4) = 13 x 7= 91 63+28=91
First, you add 9+4 because they are in parenthesis, next you multiply the Sum by the seven, when it is on the parenthesis, it is automatic to multiply the sum and the 7. You've should've got 91, and make sure to check every addition statement.