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astraxan [27]
3 years ago
10

4x+5=45 (Show work to get brainliest) A) 5 B) 10 C) 15 D) 20

Mathematics
2 answers:
solmaris [256]3 years ago
6 0

Answer: x = 10

Step-by-step explanation: To solve for <em>x</em> in the equation you see here, our goal is to get <em>x</em> by itself on one side of the equation.

Our first step will be to isolate the term containing <em>x</em> which in this case is 4x. To isolate 4x, we have to get rid of the +5 by subtracting 5 from both sides of the equation.

On the left, +5 -5 cancels and we're left with 4x. On the right, 45 - 5 simplifies to 5.

So our equation now reads 4x = 40.

To get <em>x</em> by itself since it's being multiplied by 4, we just divide both sides of the equation by 4. On the left, the 4's cancel and we're left with <em>x</em>. On the right, 40/4 simplifies to 10 so our answer is <em>x = 10</em>.

jasenka [17]3 years ago
3 0

Answer:

B) 10

Step-by-step explanation:

4x+5=45

     -5   -5

4x=40

/4    /4

x=10

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--------------------------------------------

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