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3 years ago

Is -7/8 equivalent to 49/-56?

Mathematics

2 answers:

oksian1 [2.3K]3 years ago

7 0

Is -7/8 equivalent to 49/-56? YES

because

49/7 = 7

-56/7 = 8

49/-56

= 7/-8

= -7/8

aleksley [76]3 years ago

6 0

Starting with -7/8, and mult. numerator and denominator both by -7, we get

(-7)(-7) 49

--------- = ----------

(-7)(8) -56

So, yes, -7/8 is equivalent to 49/-56.

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3 years ago

7. The difference of Grandma Annie's age and twice Carl's is 22. Gran

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<h2>Systems of Equations Word Problems</h2>

To solve these questions, we can translate key words into operations:

<em>Difference</em> = subtract
<em>Twice</em> = double
<em>Less than</em> = subtract

<h2>Solving the Question</h2>

We're given:

Difference of Annie's age and twice Carl's age is 22
Annie's age is 13 less than 3 times Carl's age

There are two variables given two us: Annie's age and Carl's age.

Let Annie's age be equal to <em>x.</em>
Let Carl's age be equal to <em>y</em>.

Translate the given information into two equations:

Difference of Annie's age and twice Carl's age is 22
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Annie's age is 13 less than 3 times Carl's age
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Now, we can substitute the fist equation into the second one to solve for <em>y</em>:

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Now, substitute <em>y</em> back into the second equation to solve for <em>x</em>:

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<h2>Answer</h2>

Therefore, Grandma Annie is 92 years old.

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3 years ago

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Answer:

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