Solve the following equations by sub-stitution methodĂŹ) 2x-7y = 3 i

1.	Solve the following equations by sub-stitution methodĂŹ) 2x-7y = 3 ii) 4x + y = 21
Answer» 2x - 7y = 3.....(1) 4x + y = 21y = 21 - 4x.....(2) Put the value of y from eq(2) in eq(1) 2x - 7(21-4x) = 32x - 147 + 28x = 330x = 150x = 5 Put value of x in eq(2)y = 21 - 2*5y = 21 - 10y = 11 Value of x = 5, y = 11 Thanks for the answer

Solve the following equations by sub-stitution methodĂŹ) 2x-7y = 3 ii) 4x + y = 21

Answer»

2x - 7y = 3.....(1)

4x + y = 21y = 21 - 4x.....(2)

Put the value of y from eq(2) in eq(1)

2x - 7(21-4x) = 32x - 147 + 28x = 330x = 150x = 5

Put value of x in eq(2)y = 21 - 2*5y = 21 - 10y = 11

Value of x = 5, y = 11

Thanks for the answer