pandaboost89 pandaboost89

17-02-2021
Mathematics

contestada

Y=4x-1
Y-2=x
i need help substitution method

Respuesta :

MiaBreznau MiaBreznau

17-02-2021

Answer:

x = 1, y = 3

Step-by-step explanation:

x = y - 2, so y = 4 (y - 2) -1

solve normally now

y = 4 (y - 2) -1

y = 4y - 8 - 1 (distribute)

y = 4y - 9 (simplify)

+9 -y -y +9

9 = 3y

3 = y

y - 2 = x

(3) - 2 = x

x = 1

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