Question

2x+5y=10,6x+5y=20
contain solution
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Answer 1

Answer:

X = 2.5 and Y =1

Step-by-step explanation:

By changing Signs and adding we get the following result

6x + 5y = 20

-(2x + 5y = 10)

____________

4x + 0y = 10

____________

Then X = 10/4

By substituting the value of X in any one of the equations we will get the value of Y.

6(10/4) + 5y = 20

15 + 5y = 20

5y = 20 - 15

5y = 5

y = 5/5

Y = 1