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 ( 23+ )
Otras preguntas
PLEASE HELP One major result of the 1905 revolution in Russia was that... Russian workers organized into soviets Tsar Nicholas ll gave up power Russia suffere
more French lol merci
Identify the object described in this short ad: Je suis petite et pratique. Tu peux jouer à des jeux et tu as des applications dessus. Je suis moins chère qu'un
1 What is there about American society that makes baseball America's "national pastime"? 2 The actor John Gielgud believed that of all Shakespeare's characters
What was the nature of freedom in the 18th century france?
The shallow depression between folds on the surface of the brain is called
What is the product of 1 2/3 and −3 1/2? −5 5/6 −3 1/3 3 1/3 5 5/6
what does conserving mass mean in a chemical equation? A. There a more of each type of atom on the product side than on the reactant side. B. There are more of
Which labeled line marks the boundary of the Qin empire A. A B. B C. C
the paleolithic era refers to a time when early humans did what?
