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

What is 9-4(2p-1)=45?

how many minutes is it before 12 noon if 20 minutes ago it was three times as many minutes after 9 am

A punch recipe calls for 3 pints of orange juice does the recipe How many ounces oof oranges juice does it requirew

a swimming pool is 20 meters long and 12 meters wide the bottom of the pool is slanted so that the water depth is 1.3 at the shallow end and 4 meters deep at th

which of the following would not make a good insulator* rubber*plastic*wood*metal

Can anyone help me with turning fractions into decimals 2 1/2

Can anyone help me with turning fractions into decimals 2 1/2

57% of 109 is what number? plz help

What does compris mean in French ???

What is hyperbole? Please help