Add and simplify: 9x/6x-30 + 3x/4x-20 thanks?

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Tyler Banhchong Profile
Tyler Banhchong answered
9x/6x-30 + 3x/4x-20                    Reduce the first term
= 6x/4x-20 + 3x/4x-20                Multiply the first term by 2/2 (Identity theorem) to create a LCM
= 9x/4x-20                                  Add like terms

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