2006-10-05 15:09:05 · 8 answers · asked by Chris C 2 in Education & Reference ➔ Homework Help
Add 7 to both sides:
4k - 7 + 7 = -7 + 7
4k = 0
Divide by 4:
k = 0
There's an algebra teacher's trick: if the class seems to understand something pretty well, give them a problem where the answer is 0. For some reason, that throws about a third of the class into conniption fits. Don't let it worry you - just follow the standard procedures and accept what comes out. Zero is a perfectly valid answer.
2006-10-05 15:13:36 · answer #1 · answered by Anonymous · 2⤊ 0⤋
4k-7=-7
+7 +7 Add 7 to both sides
4k=0
k=0
2006-10-05 15:12:26 · answer #2 · answered by riven3187 3 · 0⤊ 0⤋
add both sides by 7 and you get 4k=0 then you divide both sides by 4 and then you get k=0;
4k-7=-7
+7 +7
4k=0
k=0
2006-10-05 15:13:59 · answer #3 · answered by kiki 1 · 0⤊ 0⤋
the answer is 0.
4k-7=-7
+7 +7
4k=0
divide both sides by 4
k=0/4
simplify k=0
2006-10-05 15:13:26 · answer #4 · answered by Anonymous · 1⤊ 0⤋
k=1. add 7 to each side, cancels out, 4k / by 4 (get k alone) equals k= 4over4 or 1
2006-10-05 15:18:31 · answer #5 · answered by john m 1 · 0⤊ 0⤋
4k-7= -7
+7 +7
4k=0
No soution
2006-10-05 15:17:11 · answer #6 · answered by rugbychica 2 · 0⤊ 0⤋
4k - 7 = -7
4k = 0
k = 0
2006-10-05 15:11:51 · answer #7 · answered by JennyAnn 4 · 0⤊ 1⤋
No solution.
2006-10-05 15:11:30 · answer #8 · answered by Anonymous · 0⤊ 2⤋