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How do you use a variable in addition or subtraction? - Answers
well you would pick up your writing utensil, then draw an equation with a variable AND either a plus or a minus sign. now thats how its done. Not sure what the person above was getting at but I hope this helps You can add or subtract like variables just as you would with normal numbers . Like variables means they must be the same so you can add an x with an x but cannot add a x to a y For example 5x+2x=7x 4x+3y+12x= 16x+3y 4x-2x-y=2x-y 7x-3x-1x-2x= x or 1x 9x+3x -2y+8y= 12x+6y 2x+3x+4y-y+2x-3y=7x
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How do you use a variable in addition or subtraction? - Answers
well you would pick up your writing utensil, then draw an equation with a variable AND either a plus or a minus sign. now thats how its done. Not sure what the person above was getting at but I hope this helps You can add or subtract like variables just as you would with normal numbers . Like variables means they must be the same so you can add an x with an x but cannot add a x to a y For example 5x+2x=7x 4x+3y+12x= 16x+3y 4x-2x-y=2x-y 7x-3x-1x-2x= x or 1x 9x+3x -2y+8y= 12x+6y 2x+3x+4y-y+2x-3y=7x
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How do you use a variable in addition or subtraction? - Answers
well you would pick up your writing utensil, then draw an equation with a variable AND either a plus or a minus sign. now thats how its done. Not sure what the person above was getting at but I hope this helps You can add or subtract like variables just as you would with normal numbers . Like variables means they must be the same so you can add an x with an x but cannot add a x to a y For example 5x+2x=7x 4x+3y+12x= 16x+3y 4x-2x-y=2x-y 7x-3x-1x-2x= x or 1x 9x+3x -2y+8y= 12x+6y 2x+3x+4y-y+2x-3y=7x
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