Question

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

Answer 1

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