marlowk8th marlowk8th

18-10-2020
Mathematics

contestada

When solving the system of equations, x + 2y = 15 which expression could be substituted 5x + y = 21for x in the second equation?

Respuesta :

wlmrbck wlmrbck

18-10-2020

X=3 Y=6

5 x 3 = 15
15 + 6 = 21

3 + (2 x 6) = 15

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