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

Otras preguntas

A fracture is a ________ in the bone. it can occur from either a quick, one-time injury to the bone, or from repeated ________ inflicted on the bone over time.

Which layer would p-toluic acid be more soluble if p-toluic acid were added to a two layer mixture of text butyl methyl ether and water?

Tin (ii) fluoride (snf2), or stannous fluoride, is used in some home dental treatment products. it is made by the reaction of tin with hydrogen fluoride accordi

We know, through fossil evidence, that biological diversity has _______ over time. A) increased B) decreased C) become greater D) not changed

If an author with the above credentials wrote an article titled conducting primary research would you consider it a credible source

Please Help! :) The height of a rectangle is 3 units less than twice the width. A) If the width of the rectangle is represented by the variable w, write an expr

identify the impact that technology has on quality, access, and cost of healthcare.

A washer and a dryer cost $770 combined. The washer costs $70 more than the dryer. What is the cost of the dryer?

The air that we breathe is actually a mixture of several gases. of those involved, which is the third most abundant component of the mixture?

Lenovo decides that she wants to purchase a bicycle so that she can get more exercise. she wants a touring bike but doesn't have enough money for a new one, so