3 years ago

Please please help me on this one!

Mathematics

1 answer:

gizmo_the_mogwai [7]3 years ago

3 0

Answer:

3422 x232

Step-by-step explanation:

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Nastasia [14]

Answer:

The answer o your question is y=8

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3 years ago

The difference of two numbers, a and b, is 21. The difference of 5 times a and two times b is 18. What are the values of a and b

alexdok [17]

$a-b=21 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ |\times (-2) \\
5a-2b=18 \\ \\
-2a+2b=-42 \\
\underline{5a-2b=18 \ \ \ \ \ \ \ } \\
5a-2a=18-42 \\ 3a=-24 \\
a=\frac{-24}{3} \\
a=-8 \\ \\
a-b=21 \\
-8-b=21 \\
-b=21+8 \\
-b=29 \\
b=-29$

a=-8 and b=-29.

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4 years ago

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HELP PLZ 7k + 4s = 20 -8k + 2s = 10 What is the value of k?

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Divide 20 by 4=5
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4 years ago

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Dafna1 [17]

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