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kogti [31]
3 years ago
7

Please help step by step!!!

Mathematics
2 answers:
LenKa [72]3 years ago
8 0

\huge \boxed{\mathfrak{Question} \downarrow}

  • What's the solution of 9 • x = - 63 ?

\large \boxed{\mathfrak{Answer \: with \: Explanation} \downarrow}

\sf \: 9 \cdot x = - 63

Divide both sides by 9.

\sf \: x=\frac{-63}{9}  \\

Divide -63 by 9 to get -7.

\boxed{ \boxed{ \bf \: x=-7 }}

Lesechka [4]3 years ago
5 0

Answer:

-7

Step-by-step explanation:

We first are going to flip the equation around.

So instead of 9 times x = -36 we'll do 36/9. 36/9 = -7.

Also you will kind of know it will be a negative number from the beginning since it's -36.

I don't know if that last part makes any sense, but I hope this helps you!

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Subtract.<br> (3r²s+ 4rs+2-16r²s²) - (7sr²+10-13r²s²)<br><br> Simplify answer. Do not factor
pentagon [3]

[- 3r²s² - 4sr² + 4rs - 8] is the resultant answer when we subtract the linear equation (7sr²+10-13r²s²) from (3r²s+ 4rs+2-16r²s²).

<h3>What are linear equations?</h3>
  • A linear equation in one variable is a mathematical expression for an equation with only one variable.
  • While any two real integers can represent A and B, the ambiguous variable x has just one possible value.
  • The formula is Ax + B = 0.
  • 9x + 78 = 18 is an example of a linear equation with just one variable.

So, we have:

  • (3r²s+ 4rs+2-16r²s²) - (7sr²+10-13r²s²)

Now, calculate as follows:

  • = (3r²s+ 4rs+2-16r²s²) - (7sr²+10-13r²s²)
  • = 3r²s+ 4rs+2-16r²s² - 7sr²- 10 + 13r²s²
  • = 13r²s² - 16r²s²  - 7sr² +  3r²s + 4rs - 10 + 2
  • = - 3r²s² - 4sr² + 4rs - 8

Therefore, [- 3r²s² - 4sr² + 4rs - 8] is the resultant answer when we subtract the linear equation (7sr²+10-13r²s²) from (3r²s+ 4rs+2-16r²s²).

Learn more about linear equations:

brainly.com/question/11897796

#SPJ13

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Answer:

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15% of 70 = 10.5

70 - 10.5 = 59.5

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