Mathematics, 05.02.2021 01:20 liliaboop5006

I NEED HELP FAST Zane is determining whether the given value of the variable is a solution of the equation. 13 + h = 21 for h = 9

What steps should Zane take? Check all that apply.
Substitute 9 for the variable h.
Substitute 21 for the variable h.
Simplify by adding 13 and 21.
Simplify by adding 13 and 9.
21 = 21, so 9 is a solution to the equation.

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I NEED HELP FAST Zane is determining whether the given value of the variable is a solution of the eq...