Marissababy Marissababy

03-05-2017
Mathematics

contestada

8x-9y=19 4x+y=-7 How Do I Do This Type Of Math

Respuesta :

mreijepatmat mreijepatmat

03-05-2017

8x-9y=19
4x+y=-7
Multiply all terms of the 2nd by (9)===> 36x + 9y= 63

add (36x 9y= 63) to the 1st ===> 44x+0y = -44 ===> x=-1
replace x by this value in any of the equation & you'll get y=-3

Answer Link

Otras preguntas

Much of the water vapor in the moisture plume condensed into clouds that produced precipitation and replenished fresh water at earth's surface. the ultimate sou

Help me plz, explain it

A store sold 550 video games during the month of December if thus made up 12.5% of its yearly video game sales about how many video games did the store sell a y

Which is a physical property of milk? A. Milk has a pH ranging from 6.4 to 6.8. B. Milk spoils when left unrefrigerated over several days. C. Milk boils at abou

How many pages of 5000 zeros does it take to make one billion?

The skies they were ashen and sober; The leaves they were crispéd and sere— The leaves they were withering and sere; It was night in the lonesome October Of my

Who innovations include the electric lightbulb and the phonograph?!!!!!!

how can studying history teach about yourself

What command can be used to export an nps backup file named npsconfig.xml that can be used to restore nps configuration on another server?

Multiply (2 – 7i)(–1 + 4i). 26 + 15i –2 – 28i 26 + i –30 + 15i