Question

2x+5y=10 , x-3y=-5 find it by elimination method​

Answer 1

Answer:

y=0 and x= -5

Step-by-step explanation:

• a1=2 , b1=5 , c1= -10____eq(1)
• a2=1 , b2= -3 , c2=5____eq(2)

• multiply 2 in equation(2)

• 2x-6y=-10___eq(2)

• 2x+5y=10
• 2x-6y=-10

now,

• change the sign,we get

2x+5y=10

-2x-6y=-10

----------------

y=0

• substituting the value of y=0 in eq(2)
• 2x-6(0)= -10
• 2x -0= -10
• 2x= -10
• x = -10/2

x=-5

Answer 2

Step-by-step explanation:

1. 2x+5y=10
2. X-3y=-5(multiply by 2)

Equation two becomes

2x-6y=-10

multiply new equation by -1

here, -2x+6y=10

subtract above equation from 1st one

I.E

2X+5y=10

-2x+5y=10

____________

10y=20

y=2

put y=2 value in equation 2

x-3×2=-5

x-6=-5

x=-5+6

x=1 or 0