2006-08-30 15:24:28 · 7 answers · asked by southern_rdhd_angel 1 in Education & Reference ➔ Homework Help
21-(13-7)/2
=21-6/2
=21-3
=18
2006-08-30 15:26:44 · answer #1 · answered by Raven Hood® 4 · 0⤊ 0⤋
=21-(6)/2
=21-3
=18
2006-08-30 22:26:37 · answer #2 · answered by mj 2 · 0⤊ 0⤋
Subtract 13 from 7
21 - (6) / 2
Divide 6 by 2
21 - 3
Subtract 3 from 21
18
2006-08-30 22:27:39 · answer #3 · answered by Illy 3 · 0⤊ 0⤋
always remember your order of operations. Use this acronym: P.E.M.D.A.S......Parenthesis, Exponents, Multiplication, Division, Addition, Subraction. Do these chronologically and you wil be fine.
Your equation. First do parenthesis, 13-7, now you have 6. Now do division since there is no multiplication. You now have 21-6/2, you now do division, 10.5-3=7.5. 7.5 is your answer!
2006-08-30 22:37:52 · answer #4 · answered by Anonymous · 0⤊ 0⤋
21-(6)/2
21-3=
18
2006-08-30 22:29:58 · answer #5 · answered by RoxySurf 2 · 0⤊ 0⤋
21-(13-7)/2
21-6/2
21-3
18
hope it helps
2006-08-30 22:30:48 · answer #6 · answered by Finn 3 · 0⤊ 0⤋
7.5
2006-08-30 22:26:10 · answer #7 · answered by rod_j_clifton 2 · 0⤊ 0⤋