solve each problem by working backward.
2007-10-09 08:16:01 · 13 answers · asked by purplechic09 3 in Science & Mathematics ➔ Mathematics
suppose the number is x
so
(x-8) * 2 =24
x-8=12
x=12+8
x=20
2007-10-09 08:22:45 · answer #1 · answered by mbdwy 5 · 0⤊ 0⤋
20
2007-10-09 15:22:24 · answer #2 · answered by programhelp 2 · 0⤊ 0⤋
It's 20
2007-10-09 15:24:17 · answer #3 · answered by fijibabie 5 · 0⤊ 0⤋
Working backward: before multiplying by 2, one would have 12. Adding 8 gives 20.
2007-10-09 15:19:25 · answer #4 · answered by Anonymous · 1⤊ 1⤋
2 (x - 8) = 24
x - 8 = 12
x = 20
Check
2(20 - 8) = 2 x 12 = 24
2007-10-13 12:37:08 · answer #5 · answered by Como 7 · 0⤊ 0⤋
20 - 8 = 12 * 2 = 24
The number is 20
2007-10-09 15:19:46 · answer #6 · answered by Ms. Exxclusive 5 · 0⤊ 1⤋
(N - 8) x 2 = 24
2N - 16 = 24
2N - 16 + 16 = 24 + 16
2N = 40
2N / 2 = 40 / 2
N = 20
2007-10-09 15:24:48 · answer #7 · answered by Hiker 4 · 0⤊ 0⤋
(x - 8) * 2 = 24
x - 8 = 12
x = 20
2007-10-09 15:23:00 · answer #8 · answered by gebobs 6 · 0⤊ 0⤋
20.
2007-10-09 15:18:51 · answer #9 · answered by miss_renaenae 2 · 0⤊ 1⤋
2(x-8)=24
x-8=12
x=20
2007-10-09 15:20:46 · answer #10 · answered by Anonymous · 0⤊ 0⤋