math

Suppose that a crayon weighs the same as a marker. You have a box of crayons, 4 extra crayons, and 20 markers. Let b be the number of crayons in the box. A scale balances with all the crayons on one side and all the markers on the other. You remove markers from the scale so that you can color a picture. Find how many crayons you must remove to keep the scale balanced. Then complete the equation.

b+4−___=18

How many crayons must you remove to keep the scale balanced?

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asked by william
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