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?
1 answer
12
1 answer