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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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Explain how you know to use a variable in an addition or subtraction expression?
that we can use it
How do you solve multi step equations?
Solving • Work backward to isolate the variable and solve the equation.Multi-Step • Use subtraction to undo addition, and use addition to undo subtraction.Equations • Use multiplication to undo division, and use division to undo multiplication.
Which calculations come last in the order of operations?
addition and subtraction
Why can you use addition to check your subtraction?
Addition is the opposite of subtraction. For example, 24 - 9 = 15. If you want to check your answer, add 9 + 15. It equals 24, so your answer is correct.
What comes first in pemdas addition or subtraction?
d-a-s division-addition-subtraction
