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Simplify the following expression using the number properties. Write the name of the number property you used.

(-4z+5z)+4
in order of operations by

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1 Answer

(-4z+5z)+4z=z+4z=5z;

-4z+(5z+4z)=-4z+9z=5z;

(-4z+4z)+5z=0+5z=5z;

the associative law allows any grouping in addition. Note that a-b is the same as a+(-b), so subtraction can be converted to addition by adding on a negative quantity instead of subtracting a positive quantity.

by Top Rated User (1.0m points)

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