Evaluate 10 + 8 ÷ 2 − 4.

10
5
6
14

The rank of ( divide and multiply) is higher than ( summation and subtraction ) so we divide 8/2 first
10+(8/2)-4
10+4-4= 10

1. isolate the variable, in this case, d. subtract 35.5 on both sides of the equation.2. 52 subtracted by 35.5 is 16.53. therefore your answer would be d= 16.5this is the basics of pre algebra, isolating variable through adding, subtracting, multiplying, and dividing, if you have any other questions to ask just comment!