2007-02-01 02:50:16 · 10 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
You can ignore the parenthesis since they have no effect on the order of operations. Your equation is
5x - 7 = 4
Simply add 7 to both sides to get
5x = 11
Then divide both sides by 5 to get
x = 11/5........ x = 2.2
This is very basic algebra; I'm hoping that you're still in grade school.
2007-02-01 02:55:32 · answer #1 · answered by Anonymous · 0⤊ 1⤋
5x - 7 = 4
(add 7 to both sides)
5x = 11
(divide both sides by 5)
x = 11/5
(which equals)
2 and 1/5 or 2.2
(depending on whether you want it as a fraction or the actual value)
I've included the explanation so you can understand how to do it and do some yourself. Can't put all your homework on yahoo! answers.
2007-02-01 10:59:52 · answer #2 · answered by Adam L 5 · 0⤊ 0⤋
Is it that difficult? You start with 11-7=4. It has to be 11, because no other number will do. And then you need to ask what the x in 5x needs to be to give you 11. The x has to be 2.2 because no other number will give you 11.
2007-02-01 10:57:53 · answer #3 · answered by tirumalai 4 · 0⤊ 1⤋
(5x - 7) = 4, so
5x = 4 + 7, so
x = (4 + 7)/5, which equals 2.2
2007-02-01 10:55:47 · answer #4 · answered by Boofie 6 · 0⤊ 0⤋
5x-7=4
+7 +7
5x=11
x=2.2
2007-02-01 10:57:16 · answer #5 · answered by i love him 2 · 0⤊ 0⤋
(5x - 7) = 4
5x - 7 = 4
5x - 7 + 7 = 4 + 7
5x = 11
5x/5 = 11/5
x = 11/5
x = 2 1/5
X = 2.2
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2007-02-01 11:05:38 · answer #6 · answered by SAMUEL D 7 · 0⤊ 0⤋
5x = 11
x = 11/5 or 2.2
2007-02-01 10:53:45 · answer #7 · answered by tony m 2 · 0⤊ 0⤋
By order of operations, do multiplication first then minus
x = 4 / 5 + 7
x = 0.8 + 7
x = 7.8
2007-02-01 11:08:01 · answer #8 · answered by Vicky V 2 · 0⤊ 0⤋
2,2
(5x-7 = 4 ||+7
5x = 11 ||/5
x =2,2)
2007-02-01 10:55:16 · answer #9 · answered by su r 2 · 0⤊ 0⤋
2.2
2007-02-01 10:53:56 · answer #10 · answered by ??????????? 2 · 0⤊ 0⤋