Yahoo Answers: Answers and Comments for 4(x5)+3=31? [Mathematics]
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From Mariza
enUS
Sun, 20 Oct 2019 19:06:29 +0000
3
Yahoo Answers: Answers and Comments for 4(x5)+3=31? [Mathematics]
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From Robert J: That's an easy one as you can just work ba...
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Sun, 20 Oct 2019 19:12:32 +0000
That's an easy one as you can just work back through it, undoing one stage of the calculation at a time:
4 (x5) +3 = 31
4 (x5) = 28
x5 = 7
x = 12

From Greg: 4x  20 + 3 = 31
4x = 48
x = 12
I don't kn...
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Sun, 20 Oct 2019 19:10:01 +0000
4x  20 + 3 = 31
4x = 48
x = 12
I don't know what the technique is called today. I learned how over 50 years ago.

From Artemis: Remove the brackets by expanding.
4(x5) + 3 =...
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Thu, 24 Oct 2019 00:39:21 +0000
Remove the brackets by expanding.
4(x5) + 3 = 31
Isolate for x.
4x  20 + 3 = 31
4x = 31 + 20  3
4x = 48
Divide both sides by 4.
4x/4 = 48/4
x = 12

From BENARD: Given that 4(x5) +3=31. opening the bracket
...
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Mon, 21 Oct 2019 14:41:15 +0000
Given that 4(x5) +3=31. opening the bracket
this becomes 4x20+3=31..collecting like terms then simplify
this becomes 4x=31+203
this imply that 4x=48..dividing both sides by 4
this becomes, x= 12,answer

From Jenna: Do the foil method first, so,
4x  20 + 3 = 31...
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Mon, 21 Oct 2019 01:10:41 +0000
Do the foil method first, so,
4x  20 + 3 = 31
Then, isolate for variable,
4x = 31 + 20  3
Then simplify,
4x = 48
Then divide by 4 to solely isolate for x,
x = 12

From sepia: 4(x  5) + 3 = 31
4x = 48
x = 12
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Sun, 20 Oct 2019 23:54:51 +0000
4(x  5) + 3 = 31
4x = 48
x = 12

From Lôn: 4x  20 + 3 = 31
4x = 31 + 20  3
4x = 48
x...
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Sun, 20 Oct 2019 20:55:57 +0000
4x  20 + 3 = 31
4x = 31 + 20  3
4x = 48
x = 48/4
x = 12

From Como: 
4 ( x  5 ) = 28
x  5 = 7
x = 12
o...
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Sun, 20 Oct 2019 19:34:10 +0000

4 ( x  5 ) = 28
x  5 = 7
x = 12
or
4x  20 = 28
4x = 48
x = 12
or
4x  17 = 31
4x = 48
x = 12

From BillM: Step one: Remove the ( ) by doing the multi...
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Sun, 20 Oct 2019 19:27:05 +0000
Step one: Remove the ( ) by doing the multiplication.
4X20+3 = 31
Step two: Combine like Terms:
4X17=31
Step Three: Add 17 to both sides of the equation
4X= 48
Step Four: Divide both sides of the equation by 4
X= 12