Question

Solve the system of equations by the substitution method
x+10y=27
3x +6y=9

Answer 1

x= -3 ; y=3

Explanation:

x = 27 - 10y

3(27-10y) + 6y = 9

81-30y + 6y = 9

-24y = 9-81

-24y = -72

-24/-24 y = -72/-24

y= 3

x= 27- 10(3)

x = 27 - 30

x = -3