Ash0405
Ash0405
02-02-2015
Mathematics
contestada
Solve by substitution
X+3y=1 and -3x-3y=-15
Respuesta :
Аноним
Аноним
02-02-2015
[tex]x+3y=1\\ -3x-3y=-15\\ add\quad the\quad equ.\\ (x+3y)+(-3x-3y)=1-15\\ x-3x+3y-3y=-14\\ -2x=-14\\ x=\frac { -14 }{ -2 } \\ x=7\\ Let's\quad rewrite\quad the\quad equ.\\ 7+3y=1\\ 3y=1-7\\ 3y=-6\\ y=\frac { -6 }{ 3 } \\ y=-2[/tex]
Answer Link
VER TODAS LAS RESPUESTAS ( 21+ )
Otras preguntas
what is 3/4 of a turn or of 360 degrees??
is new York City a rural urban or suburban community
which spanish city is known for the fact that people of three different religions peacefully lived there together? (1 point) Avila Madrid Segovia Toledo
what is the range of wavelengths for green light?
Graph each equation. 5y=20x-30
what were Verrazano and Cartier searching for when they explored the American
what is 12.72 divided by 3.6
Which enlightenment thinker fought for tolerance and reason and whose ideas of freedom of speech and religion were included in the us bill of rights and the fre
What was a shortcoming of the Agricultural Adjustment Act (AAA)? It curtailed the agricultural output and affected exports. It brought in mechanization, increas
While doing research for a thesis paper about how human migration and population distribution can greatly alter or destroy the natural landscape, you come acros
