archiechansuperman archiechansuperman

05-03-2019
Mathematics

contestada

7d-12+2d+3=18 solve variable. include steps, also check your answer!

Respuesta :

quinnxhailey quinnxhailey

05-03-2019

Answer:

d = 3

Step-by-step explanation:

7d - 12 + 2d + 3 = 18

9d - 9 = 18

9d = 27

d = 3

CHECK:

7(3) - 12 + 2(3) + 3 = 18

21 - 12 + 6 + 3 = 18

18 = 18

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