02-11-2017
Mathematics

contestada

Elimination
4x+5y=-15
-3x-2y=13

Respuesta :

Dreamer4102001 Dreamer4102001

04-11-2017

multiply the first equation by 3 and tge second by 4:
12x+15y=-45
-12x-8y=52
then add the equations:
0x+7y=7
7y=7
y=1
so 4x+5(1)=-15
4x+5=-15
4x=-20
x=-5

Answer Link

Otras preguntas

Babysitting for 8 hours and making $72.00 or babysitting for 6 hours and making $57.00

Here help me please.

Solve the equation for y[tex] \frac{2}{5}x + y = 3[/tex]

The rectangle below has a total perimeter of 143 m: Which of the following equations can be used to determine the length of the longer side of the rectangle? (a

the water cycle, like the other cycles, is a “closed system.” what does that say about the importance of keeping the water on earth free from population

ratio of 9 maple trees to 5 oak trees how did they come up with 36 maple trees

What are two example of molecules that belong in amino acids?

Which of the following is NOT a theory about why the Minoan civilization disappeared? A. an earthquake B. a volcanic eruption C. famine D. the Persian Wars

What is the 10th Amendment about

which factor was not a reason for settling the British Colonies