Question

solve 3x-4y=20 and x+2y=5 Find value of x and y

2 points

6,2

6,-1/2

6,-2

-6,-1/2

Option 5

Clear selection


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Answer 1

Step-by-step explanation:

3x-4y=20

x+2y=5

=>4x+8y=20

=>4x+8y=3x-4y

=>x=-12y

Lets take the second equation

x+2y=5

=-12y+2y=5

=-10y=5

=y=-1/2

x=-12×-1/2

=x=6