When you solve an equation, how do you know when to add and when to subtract?

Question

aaronq · Answer

a biology equation?

anonymous · Answer

Welcome to OpenStudy, @dinosour1480 !

dean.shyy · Answer

You add and/or subtract like terms. For example, you can subtract 4xy from 5xy, but not from 5xz. Only mathematically operate on like terms.

swag · Answer

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anonymous · Answer

any equation