samone26 samone26

26-05-2019
Mathematics

contestada

How do I solve this step by step

How do I solve this step by step class=

Respuesta :

maquenzie maquenzie

26-05-2019

Answer:

23

Step-by-step explanation:

1. (x + 7) + (3x - 9) = 90

x + 7 + 3x - 9 = 90

4x - 2 = 90

4x = 92

x = 23

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