odelllinkin2002
odelllinkin2002
01-11-2017
Mathematics
contestada
3x+5y=2 and 9x+11y=14 equals
Respuesta :
choixongdong
choixongdong
01-11-2017
3x+5y=2 (1)
9x+11y=14 (2)
multiply equation (1) by 3
9x + 15y = 6
so
9x + 15y = 6 (1')
9x + 11y =14 (2)
-------------------------subtract
4y = -8
y = -2
3x+5y =2
3x+5(-2) =2
3x - 10 = 2
3x = 12
x = 4
answer
(4, -2)
Answer Link
VER TODAS LAS RESPUESTAS ( 91+ )
Otras preguntas
*simplify expression* 8x - 7y - (3 - 6y)
divide £21 in ratio 3:4
Lulu bought 2 blouses for $24 each and 3 pairs of socks for $7 each, tax included. How much change would she receive if she paid with bills totaling $80? Choose
What's 30.08 divided by 4
What are two halves that geographers divide the earth
what is 14,494 to the nearest ten thousand feet
How do you say-her favourite colour is pink- in Spanish.???
2.08 cm =__________mm
Why was it important for the Americans to win the support of France during the revolution
3x+15-7x=-7 solve for x