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Mark up would mean to add. Mark down would mean to subtract.

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Q: Do you add or subtract when you mark up?

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18

You add or subtract only the numerators

You add up 4,3 and 4 and then you subtract that by eight

Yes, you can add or subtract under the radical.

Subtract.

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explain why it is important to line up decimal numbers by their place value when you add or subtract them

it means to subtract

When you add, your answer is the sum.When you subtract, your answer is the difference.

How do you add or subtract energy?

You add or subtract only the numerators

18

deposit = add withdraw = subtract

You have to add the additive inverse. To subtract q, you add -q.

you add and subtract decimals by writing down your number and then line up your decimal's.yourwelcome kinda smart for a math problem like that huh?

You add up 4,3 and 4 and then you subtract that by eight