stferguson7 stferguson7

17-06-2021
Mathematics

contestada

Solve the system by substitution.

x=9y
x-5y=20

Respuesta :

SunshineSenpai SunshineSenpai

17-06-2021

Answer:

x-5=20

9y-5y=20

4y=20

4y÷4=20÷4

y=5

x=9y

x=9×5

x=45

Answer Link

yahayamaryam60 yahayamaryam60

17-06-2021

X=9y
9y-5y=20
4y=20
Therefore y=5
Substitute y=5 into eqn 1
X=9*5
X=45

Answer Link

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