solve
2007-05-02 08:19:20 · 7 answers · asked by ashley f 1 in Science & Mathematics ➔ Mathematics
4 = 4+5 + 7x
0=5+7x
-5=5-5+7x
-5=7x
x=-5/7
2007-05-02 08:23:37 · answer #1 · answered by iyiogrenci 6 · 0⤊ 0⤋
4=9+7x
subtract 9
-5=7x
divide by 7
-5/7=x
2007-05-02 15:28:06 · answer #2 · answered by rcpzippel 1 · 0⤊ 0⤋
4 = 9+ 7x
take 9 away from each side
-5 = 7x
divide each side by 7.
-5/7 = x
2007-05-02 15:28:54 · answer #3 · answered by thingamabob 3 · 0⤊ 0⤋
hi very easy :)
we are trying to isolate the varible so the only way is to start by subtracting nine from both sides: 4-9= 9-9+7x
we are left with -5=7x. we need to divid both sides by seven because the opposite of mult. is division. your answer is:
x=-5/7
2007-05-02 15:29:57 · answer #4 · answered by Elizabeth 3 · 0⤊ 0⤋
-5/7=x
2007-05-02 16:48:59 · answer #5 · answered by Anonymous · 0⤊ 0⤋
4=9+7x
9+7x-4=0
5+7x=0
7x=-5
x=(-5/7)
2007-05-02 15:59:57 · answer #6 · answered by bootis32 6 · 0⤊ 0⤋
-7X=9-4
-7X=5
X= -5/7
X= -0.71
2007-05-02 15:29:51 · answer #7 · answered by Anonymous · 0⤊ 0⤋