Answer: 90
Steps:
Step 1.
Group the positive and negative terms in 35 + (-1) + (64) + (- 8) together and factor out the minus sign. Also remove the parenthesis.
Step 2.
35 - 1 + 64 - 8
(35 + 64) - (1 + 8)
Step 3.
Evaluate 35 + 64.
35 + 64 = 99
Therefore we have 99 - (1 + 8)
Step 4.
Evaluate 1 + 8.
1 + 8 = 9
Therefore we have 99 - 9.
Step 5.
Subtract 9 from 99.
99 - 9 = 90