Question

3x+2y=11 -3x+5y=-25 in elimination method

Answer 1

Step-by-step explanation:

3x+2y=11  --> eq.1

-3x+5y=-25 --> eq.2

To the solve the equations through elimination method:-

add them,

 (3x+2y=11)  + (-3x+5y=-25)

= 0 + 7y = -14

7y = -14 -- > y = $\frac{-14}{7}$ = -2

y = -2

To find the value of x, substitute the value of y in the 1st equation.

3x + 2(-2) = 11

3x-4 = 11

3x = 15

x = $\frac{15}{3}$

x = 5