
David W. answered 01/04/17
Tutor
4.7
(90)
Experienced Prof
Use P-E-M-D-A-S:
10+4(3+2)+5+(12/6)
10 + 4 * (3+2) + 5 + (12/6) [spaces and implied "*" added]
10 + 4 * 5 + 5 + (12/6) [P; perform A; rescan]
10 + 4 * 5 + 5 + 2 [P; perform D; rescan]
10 + 20 + 5 + 2 [M; rescan]
30 + 5 + 2 [A; L-to-R]
35 + 2 [A]
37