algebra equations?

0 ⤊

25x(nx3)=750 (n+7)x12=17x12 (n+4)x15=14x15

2007-01-09 19:38:00 · 3 answers · asked by marie b 1 in Science & Mathematics ➔ Mathematics

3 answers

25x(nx3)=750
=>(nx3) = 30
=> n = 10

(n+7)x12=17x12
=>(n+7) = 17
=>n=10

(n+4)x15=14x15
=>(n+4) = 14
=>n=10

2007-01-09 19:49:26 · answer #1 · answered by i m gr8 3 · 0⤊ 0⤋

Please separate different problems onto different lines; this makes it much easier to follow.

25x(nx3) = 750
=> nx3 = 750/25
=> nx3 = 30
=> n = 30 / 3 = 10.

(n+7)x12 = 17x12
=> n + 7 = 17x12 / 12
=> n + 7 = 17
=> n = 17 - 7 = 10.

(n+4)x15 = 14x15
=> n+4 = 14x15 / 15
=> n+4 = 14
=> n = 14 - 4 = 10.

2007-01-10 03:47:36 · answer #2 · answered by Scarlet Manuka 7 · 0⤊ 0⤋

25x(nx3)

2007-01-10 04:21:41 · answer #3 · answered by bernardlivata 1 · 0⤊ 0⤋