Question

which of the following is a solution to the pair of linear equations 3x+2y=20 and 6x-5y=4

Answer 1

Answer:

3x+2y=20

6x-5y=4

multiply equation 1 by 2 it will be

6x+4y=40

subtract  from 2 equation

6x+4y-40-6x+5y+4=0

9y=36

y=4

x=20-2*9/3

=12/3=4

solution=(x,y)=(4,4)

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Step-by-step explanation:

Answer 2

Answer: 3x+2y=20]* 2

-6x-5y=-4]* 1

6x+4y=40

-6x+5y=-4

9y=36

y=36/9=4

3x+2(4)=20

3x+8=20

3x=20-8=12

3x=12

x=12/3

x=4

X=4 & Y=4

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