Solve bysubstitution method: 2x – 3y = 13; 7x – 2y = 20

1.	Solve bysubstitution method: 2x – 3y = 13; 7x – 2y = 20
Answer» Answer: x=2 y=-3 Step-by-step explanation: 2x-3y=13 multiply it by 7 we will get 14x-21y=91 7x-2y=20 multiply it by 2 we will get 14x-4y=40 by SUBTRACTING this two NEW EQUATIONS we will get -17y=51 y=51/-17 y=-3 put y value in 2x-3y=13 we will get 2x-3(-3)=13 2x+9=13 2x=13-9 2x=4 x=2

Answer»

Answer:

x=2

y=-3

Step-by-step explanation:

2x-3y=13 multiply it by 7 we will get

14x-21y=91

7x-2y=20 multiply it by 2 we will get

14x-4y=40

by SUBTRACTING this two NEW EQUATIONS we will get

-17y=51

y=51/-17

y=-3

put y value in 2x-3y=13 we will get

2x-3(-3)=13

2x+9=13

2x=13-9

2x=4

x=2

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Solve bysubstitution method: 2x – 3y = 13; 7x – 2y = 20

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