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lisabon 2012 [21]
3 years ago
11

The sum of two numbers is 20,one number is 4 less than the other.find the number

Mathematics
2 answers:
kogti [31]3 years ago
5 0
I’ve attached my work
Hope this helps!

Marysya12 [62]3 years ago
4 0
X-4+x=20


2x=20+4
2x=24
X=12
Number is 12 because 12-4 is 8 and 8+12 is 20
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Step-by-step explanation:

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3 0
2 years ago
HELP<br>2 (3x-7)=-4x-6+9x-8
Leni [432]
2 (3x - 7) = -4x - 6 + 9x - 8   Simplify 2 (3x - 7)
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    6x - 14 = 5x - 14                 Subtract 5x from both sides
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Check your answer.

  2 (3x - 7) = -4x - 6 + 9x - 8        Substitute x for 0
2 (3(0) - 7) = -4(0) - 6 + 9(0) - 8   Multiply 3(0)
    2 (0 - 7) = -4(0) - 6 + 9(0) - 8   Multiply -4(0)
    2 (0 - 7) = 0 - 6 + 9(0) - 8        Multiply 9(0)
    2 (0 - 7) = 0 - 6 + 0 - 8            Subtract (0 - 7)
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            -14 = 0 - 6 + 0 - 8             Get rid of the unneccesary 0s
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So, x = 0 .
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