contestada

Solve the following system of equations. Express your answer as an ordered pair in the format(a,b), with no spaces between the numbers or symbols.

3x+4y=17
-4x-3y=-18

Respuesta :

texaschic101
3x + 4y = 17....multiply by 4
-4x - 3y = - 18 ....multiply by 3
-------------------
12x + 16y = 68 (result of multiplying by 4)
-12x - 9y = - 54 (result of multiplying by 3)
------------------add
7y = 14
y = 14/7
y = 2

3x + 4y = 17
3x + 4(2) = 17
3x + 8 = 17
3x = 17 - 8
3x = 9
x = 9/3
x = 3

solution is (3,2)

Answer:

the answer is (3,2)

Step-by-step explanation:

i got it right on a-p-e-x

Otras preguntas