How is adding and subtracting decimals similar to adding and subtracting whole numbers

It is similar because with adding and subtracting with whole numbers because you could literally just add a decimal to the whole number. For instance if I'm adding 2 plus 3 it could also be expressed as 2.0 plus 3.0 which would have given you the same answer but just with a .0 at the end of it.

solve systems of equations by graphing. a system of linear equations contains two or more equations e.g. y=0.5x+2 and y=x-2. the solution of such a system is the ordered pair that is a solution to both equations. to solve a system of linear equations graphically we graph both equations in the same coordinate system

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