30-45/5.3+11
30-45/15+11
30-3+11
30-14
=16
2007-09-06 14:30:14 · 4 answers · asked by CAROL C 1 in Science & Mathematics ➔ Mathematics
Exponents first, then multiplication and division, finally addition and subtraction, all starting from the left side.
30 - 45/5 * 3 + 11 >>>>> 45/5 first, which is 9
30 - 9 *3 + 11 >>>>>> 9*3 next, which is 27
30 - 27 + 11 >>>>>>> 30-27 next, which is 3
3 + 11 >>>>>> finally 3+11, which gives your answer
14
2007-09-06 14:39:22 · answer #1 · answered by drewbear_99 5 · 0⤊ 0⤋
Assuming everything up to 30 -3+11 is correct, then the step after is wrong. It should be 30 + 8 = 38 (-3+11 = 11-3 = 8)
2007-09-06 14:34:33 · answer #2 · answered by nyphdinmd 7 · 0⤊ 1⤋
how did she get 15 from 5.3
2007-09-06 14:34:05 · answer #3 · answered by Anonymous · 0⤊ 1⤋
When no parenthesis, You must do the division first.
2007-09-06 14:37:00 · answer #4 · answered by ? 6 · 0⤊ 1⤋