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| 15 - 2k| = 45?

2006-10-11 09:58:08 · 2 answers · asked by twinkie 1 in Science & Mathematics ➔ Mathematics

2 answers

Solve 15-2k = 45, then solve 15-2k=-45.

2006-10-11 10:11:30 · answer #1 · answered by James L 5 · 0⤊ 1⤋

2 cases:


case 1: 15-2k>=0,
so the equation is:
15-2k=45,
15-45=2k
-30/2=k
k=-15.

case 2: 15-2k<0,
so
2k-15=45
2k=45+15
k=60/2
k=30

2006-10-11 18:21:59 · answer #2 · answered by locuaz 7 · 0⤊ 0⤋

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