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sergij07 [2.7K]
3 years ago
9

What's the answer to the math problem 8r+4=10+2r

Mathematics
1 answer:
mart [117]3 years ago
6 0
In order to solve for r you have to place all the number in one side. then isolate r ......  r=1

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Essential: Solve the proportions<br> step by step ​
vazorg [7]

Answer:

The value of r=\frac{-106}{47}

The value of x=\frac{83}{32}

Step-by-step explanation:

Given that,

A) \frac{2r-2}{7r+10} = \frac{9}{8}

Now,

\frac{2r-2}{7r+10} = \frac{9}{8}

8(2r-2)=9(7r+10)

16r-16=63r+90

-16-90=63r-16r

-(16+90)=47r

-106=47r

r=\frac{-106}{47}

B) \frac{x+4}{9} = \frac{3(x-2)-1}{5}

Now,

\frac{x+4}{9} = \frac{3(x-2)-1}{5}

5(x+5)=9[3(x-2)-1]

5x+25=9[3x-6-1]

5x+25=9[3x-7]

5x+25=27x-63

25+63=27x+5x

83=32x

x=\frac{83}{32}

6 0
3 years ago
How to write the number in 4different ways
mario62 [17]
Lets say the number is 155:

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3 years ago
Why do you change the sign when subtracting a negative number?
natulia [17]
This is because minus times minus is equals plus so the sign must change

5 0
3 years ago
Read 2 more answers
(5, -1), (2.4) answer 1: 5/3 answer 2: -5/3
andreyandreev [35.5K]
Slope= -5/3 when using y^2-y^1 divided by x^2-x^1
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Answer:

A 2-column table with 3 rows. Column 1 is labeled x with entries 12, 15, 18. Column 2 is labeled y with entries 6, 9, 12.

Step-by-step explanation:

A 2-column table with 3 rows. Column 1 is labeled x with entries 12, 15, 18. Column 2 is labeled y with entries 6, 9, 12.

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