3 years ago

How do you solve this problem: 5(x3)-(-20)

1 answer:

8 0

First step: multiply the 5(x3) and it will give you x15 or most commonly written as 15x. you should now have 15x-(-20).

Second step: since you cannot subtract -20 from 15x because it has a variable, the final answer is just 15x-(-20), or 15x+20.

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Aliun [14]

Answer:

v=9

Step-by-step explanation:

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x=130

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3 years ago

Y minus two thirds x minus one

Harlamova29_29 [7]

Answer:y-2x/3-1

Step-by-step explanation:

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4 years ago

If holly,alex and ben had 100 balls. holly had 20 balls and alex had 2x as many as she did, how many did ben have?

umka2103 [35]

Holly has 20 balls, and there are 100 balls in total.

So there are 100-20 = 80 balls left.

Alex had 2 * the amount Holly had, which is 20.

So Alex has 20 * 2 = 40 balls.

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Which means 100-60 = 40. So Ben has 40 balls.

Check:

Holly: 20

Alex: 40

Ben: 40

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3 years ago

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4 years ago

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What is the result of adding these two equations -2x+7y=-5, -2x-4y=6

cestrela7 [59]

Answer:-4x+3y=1

Step-by-step explanation:

First put the equations above one another

-2x+7y=-5

-2x-4y= 6

Just add the corresponding number from the top from the one right below it

-2x plus -2x is 4x

7y plus -4y is 3y

-5 plus 6

Then bring down the equal sign

And you get

-4x+3y=1

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3 years ago