emarissawillett emarissawillett
  • 09-01-2020
  • Mathematics
contestada

-3×+7y=5
-8×+14y=-10
By elimination

Respuesta :

dnnshrzh dnnshrzh
  • 09-01-2020
-3x+7y=5 (x2) -> -6x+14y=10

-6x+14y=10
-8x+14y=-10
——————— -
2x=20
x=20/20
x=1

Susbstitute x=1,

-8x+14y=-10
-8(1)+14y=-10
-8+14y=-10
14y=-10+8
14y=-2
y=-2/14
y=-1/7

I hope it helps
Answer Link

Otras preguntas

Type of chemical reaction that involves the loss of water from the reacting molecules. in biological systems, it usually refers to the production of larger, bio
NEED HELP PLEASE 15PTS!: Using the table for many repetitions of the experiment of tossing a coin 10 times, what are the mean number of heads in 200 repetitions
How do you simplify 2(m+5)+8(6m+1)
By law, your liability insurance policy must provide __________ for collisions in which more than one person is injured.
Marcos has been dealt seven different cards. How many different ways can he play his cards if he is required to play one card at a time?
Write an equation in standard form of the line that passes through (3,-7) and (9,-2)
If a large Rubik's cube has a volume of 1,331 cubic inches what is its surface area?
who is the current chief executive of the united states
PLEASE HELP ON THESE ILL GIVE 20 POINTS AND A BRAINLIEST IF YOUR CORRECT!! Variation is a term that is used to describe __________. A. how repetitive a data set
2 over x squared minus 9 minus 3x over x squared 5x plus 6