gretaggustafson gretaggustafson

01-04-2020
Mathematics

contestada

Solve question 3 (a and b)
— solve each system of equations by elimination.

Solve question 3 a and b solve each system of equations by elimination class=

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ghanami ghanami

01-04-2020

Answer:

Step-by-step explanation:

hello :

6x+5y=-20.....(*)

-6x-10y=25.....(**)

add(*) and(**) : -5y=5 so y= -1

multiply (*) by 2 : 12x+10y=-40 ...(***)

now add(**) and (***) : 6x=-15 so x = -15/6 = -5/2

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