quinn89 quinn89
  • 22-11-2020
  • Mathematics
contestada

x – 2y = 1
2x + 3y = -12

Respuesta :

mnoz
mnoz mnoz
  • 22-11-2020

Answer:

x= -3

y= -2

From the first one, if you add 2y to both sides you can plug that into the second one and solve for y. Then, plug y to the first one and solve for x.

Answer Link
maxalamichael maxalamichael
  • 22-11-2020
X-2y=1
X=1+2y

2(1+2y)+3y=-12
2+4y+3y=-12
2+7y=-12
7y=-12-2
7y=-14
y=-2

x-2*-2=1
x-(-4)=1
x+4=1
x=1-4
X=-3

Answer Link

Otras preguntas

what recent world issues/problems can be solved if people rocognize and perform their role effectively
I need help on this question please help?
Anyone know how to do this? Look at picture
a⁴+b⁴=a²b² ,prove that a⁶+b⁶=0
Write y=2x^2+8x+5 in vertex form. Please
Would there be a problem or a major event in a horror story?
Write y=2x^2+8x+5 in vertex form. Please
What are the advantages and disadvantages of DNA foresics/analysis?
The time t required to drive a certain distance varies inversely with the speed r. If it takes 2 hours to drive the distance at 40 miles per hour, how long will
a) six pens and five pencils cost $2.50 while three pens and two pencils cost $1.15 . what will be the cost of a pen and 4 pencils . please help me