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 ( 63+ )
Otras preguntas
600+39 what does it add up to help
Location B is which place? Canaan Egypt Syrian Desert Mediterranean Sea
Can someone help me? Im really bad at English
Jocelyn complied data on the number of hours students work per week the summer after senior year. The minimum number of hours is the distribution was 23. The ra
In a given country the average price of a gallon of unleaded gasoline in 1997 was $1.58 in 2010 the average price was $3.11 find and interpret the average rate
what is 50+60 i need help
Roxy's new employer pays employees bimonthly, which is twice a month. She'll earn $30 per hour with the new company. She plans to continue making extra money by
A bag contains the following marbles: 8 black marbles, 12 blue marbles, 18 brown marbles, and 6 green marbles. What is the ratio of brown marbles to blue marble
My boss is pregnant is it ok to knit him and his husband a baby sweater?
I need help with project
