Mathematics, 01.12.2020 19:40 onewaydemon

I NEED HELP I already have the expressions that are equivalent that are 4x + 18 and 2 (2x + 9x) only that one, but I am missing the explanation and the question
Why might you want to rewrite 1x + 0.05x as 1.05x?
Are the expressions 10y + 5 and 5(2y - 5) equivalent? Why or why not?

Are the expressions 4x + 18 and 2(2x + 9) equivalent? Why or why not?

Are the expressions 10x + 5 and 5x + 3 + 5x + 2 equivalent? Why or why not?

Are the expressions 19x + 21 and 21x + 42 - (2x + 22) equivalent? Why or why not?

Why might you want to rewrite 1x + 0.05x as 1.05x?

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Brainilest answer for first correct answer. no guesses !