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daniellepowers daniellepowers
  • 27-04-2016
  • Mathematics
Answered

solve the system of equation 2x+3y=40 and -2x+2y=20

Ax=-6,y=4

b.x= 2 y=12

Cx=10,y=20

d.x=-10,y=20

Verified Answer :

RASEA23
RASEA23 RASEA23
  • 27-04-2016

Hi Daniellepowers!

To solve this system of equations, add the two equations.
2x+3y=40
+
-2x+2y=20
=
5y=60
y=12

Plug y back into any equation,
2x+3(12)=40
2x+36=40
2x=4
x=2

Solution: (2, 4)

B. x= 2 y=12

Hope this helps :)

Answer Link
MishelIzraeli
MishelIzraeli MishelIzraeli
  • 27-04-2016

2x+3y=40
-2x+2y=20
5y=60
y=12

2x+36=40
x=2

Answer Link

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