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

The set of all possible outcomes of a probability experiment is called the

Corporate social responsibility (csr) means that a corporation should:

please help on this question?

Choose the study habit that would most help Sophia better remember what she reads. A.Sophia should write down the main ideas while she is reading and study wor

Steve bought a 15-pound bag of concrete. He spilled the bag into smaller bags that each holds 2 1/2 pounds. How many smaller bags did Steve fill?

which Colonial area or areas placed a high value on religious freedom

States in which region receive more of their revenue from the federal government than do most other states? the west the northeast the midwest the south the non

The human population is in an era of ______ growth.

Rita is hiking along a trail that is 13.7 miles long.So far she has hiked along one-tenth of the trail. How far has Rita hiked.

list of primary arguments of the critics and defenders of the constitution