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gayaneshka [121]
2 years ago
14

I need this rn 3×-7 equivalent expressions A. -21 B. 4 C. -4 D. 21

Mathematics
2 answers:
Drupady [299]2 years ago
8 0

Answer: The answer is A. -21

Its simplified and i just multiplied 3 by -7 :)

Sindrei [870]2 years ago
7 0

Answer:

A

Step-by-step explanation:

because a plus and minus equals a minus.

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Step-by-step explanation:

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Justify each step in solving the equation -3(2x-3)=25-8x by writing a reason for each statement.
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Answer: x= 8.


Step-by-step explanation: Given equation -3(2x-3)=25-8x.

Step 1: We have -3 in front of (2x-3). We always simplify a parenthesis first.

Therefore, applying Distributive property in first step, we get

-6x +9 = 25-8x.

Step 2:  We need to get rid 9 from left side to get constant numbers on right side.

9 is being added on left side.

So, we would apply reverse operation of addition.

Therefore, applying Subtraction property of equality, we get

-6x +9-9 = 25-8x-9

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The reverse operation of subtraction is addition.

Therefore, applying Addition property of equality, we get

-6x+8x =16 -8x+8x

2x = 16.

Step 4: We need to isolate it for x.

So, applying Division property of equality, we get

\frac{2x}{2}=\frac{16}{2}

<h3>x= 8.</h3>
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