kit0058
kit0058 kit0058
  • 02-03-2017
  • Mathematics
contestada

solve by elimination

solve by elimination class=

Respuesta :

roseberline
roseberline roseberline
  • 02-03-2017
2x - 2y = -4
-3x -3y = 0
_____________________
-1x - 5y = -4

Answer Link
H1a2r3s4h5 H1a2r3s4h5
  • 02-03-2017
2x-2y=-4
Multiply eq.by 3
6x-6y=-12
-3x-3y=0
Multiply eq.by 2
-6x-6y=0
from both new eq.
6x-6y=-12
-6x-6y=0
So adding both eq. We get
-12y=-12
So y=1
From eq.1
2x-2y=-4
2x-2(1)=-4
2x-2=-4
2x=-4+2
2x=-2
x=-1
so x=-1 and y=1
Answer Link

Otras preguntas

One-half of a number is -12. Find the solution ???
how do I solve x+2y=8
At the school carnival, Carmen sold 3 times as many hot dogs as Shawn. The two of them sold 152 hot dogs altogether. How many hot dogs did Carmen sell? 51382111
Given the inequalities y > 5x-8 and y >3x+4, find the point that satisfies both inequalities
what city is located 60 north 25 east
What do you mean by corrosion? How can you prevent it?
all fractions between 0 and 1/4
distribute (x+1)(x-2)
among the qualities listed on the human relations scale, the most important one for the building new relationship is?
What Canadian city is across a body of water from New York