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What is the justification for each step in the solution of the equation?

23x−13=2(x+2)23x−13=2(x+2)
Select from the drop-down menus to correctly justify each step.

Respuesta :

Edufirst
Equation 23x - 13 = 2(x + 2)

Step                                         justification

23x - 13 = 2x + 4                     distributive property

23x - 2x - 13 = 2x - 2x + 4       subtraction property of equality (-2x)

21x -13 = 4                               combine like terms

21x -13 + 13 = 4 + 13               addition property of equality (+13)

21x = 17                                   combine like terrms

21x / 21 = 17 / 21                     division property of equality

x = 17 / 21                                 21/21 = 1