September 2018 0 6 Report
¿cuanto es?
{7x+9y=42
{12x+10y=-4
Anuncio
por Coyotldash13

Respuestas

juanrestrepo
 \left \{ {{7x+9y=42} \atop {12x+10y=-4}} \right.
por igualacion despejo y en ambas
y= \frac{42-7x}{9}
y= \frac{-12x-4}{10}
igualando
\frac{42-7x}{9}=\frac{-12x-4}{10}
10(42-7x)=9(-12x-4)
420-70x=-108x-36
108x-70x=-36-420
38x=-456
x=-456/38 = -12
reemplaxo
Y=42-7(-12)/9  =14
x=-12    y=14

Life Enjoy

" Life is not a problem to be solved but a reality to be experienced! "

Get in touch

Social

© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.