noah36246
contestada

Solve the system using elimination.
3x + 5y = 15
x+y=7
Type your answer as a coordinate pair in the textbox
below.

Solve the system using elimination 3x 5y 15 xy7 Type your answer as a coordinate pair in the textbox below class=

Respuesta :

VirαtKσhli

Step-by-step explanation:

3x + 5y = 15

x + y = 7

This can be written as ,

3x + 3y = 21

Subtracting i and iii ,

5y - 3y = 15 -21

2y = -6

y =-6/2

y = -3

So that ,

x = 21 - 3*-3 /3

x = 21 +9/3

x = 30/3

x = 10

bonniechege6

Answer:

3x+5y=15x+y=7

Step-by-step explanation:

3x+15x+5y+y=7

18x+6y=7

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