Order of operations:
1 perform operations inside parentheses.
2 Multiply and divide from left to rigth
3 Add and subtract from left to right
solve:
1 (3/8+1/4) x16
2 72 divided by (7-1) x 3
3 5/6 - 4 x 1/12
4 32 divided by (2.3 +1.7) x 3
5 (6.3 - 5.1) x (0.7+0.3)
6 1/2 x 1/2 divided by 1/2