egertonblaze
egertonblaze egertonblaze
  • 04-08-2017
  • Mathematics
contestada

4x - 3y = 17 5x + 4y = 60 x = 2, y = -3 x = 5, y = 8 x = 8, y = 5 x = -8, y = -5

Respuesta :

texaschic101
texaschic101 texaschic101
  • 04-08-2017
4x - 3y = 17.....multiply by 4
5x + 4y = 60 ...multiply by 3
-----------------
16x - 12y = 68 (result of multiplying by 4
15x + 12y = 180 (result of multiplying by 3
-----------------add
31x = 248
x = 248/31
x = 8

4x - 3y = 17
4(8) - 3y = 17
32 - 3y = 17
-3y = 17 - 32
-3y = - 15
y = -15/-3
y = 5

solution is (8,5) <==
Answer Link

Otras preguntas

The area of the base of a cylinder is 250.5 cm². Find the volume of the cylinder in litres, if it's height is 20cm.
What is an example of militarism being used in a good way
A firm has net income of $51,400, depreciation of $32,000 and taxes of $23,000. What is the firm's operating cash flow?
The recipe makes 12 miffins. You need 36.
The sum of three consecutive multiples of 11 is 165. Find these three multiples.​
Danni a mixes red and yellow paint to get orange paint. In the previous mix there were 400ml of red paint. She decreases the amount of red paint in the ratio 7
WILL GIVE BRAINLIEST IF ANSWERED QUICK!! I GIVE GOOD RATINGS FOR GOOD ANSWERS!
If two sides of a triangle measure 2 and 4, what might the third side be?
WHAT MASS OF A 7.00% HNO3 SOLUTION BY MASS CONTAINS 74 g OF HNO3?
What 3 pieces of data would you expect to see for a developing country