Question

x+ y = 3 4x - 3y = 26 by subsubstitution method

Answer 1

Step-by-step explanation:

4x+4y=12

4x-3y=26

7y=38

y=38/7

put in first eqn u get urs answer perfectly

Answer 2

$x + y = 3 \: \: \: \: \: \: \: eq \: 1$

$4x - 3y = 26 \: \: \: \: \: \: eq2$

from equation 1 , we get

$x = (3 - y) \: \: \: \: \: \: \: \: \: eq(3)$

putting in equation 2

$4 (3 - y ) - 3y = 26$

$12 - 4y - 3y = 26$

$- 7y = 26 - 12$

$- 7y = 14$

$y = - 2$

putting y=-2 in equation (3)

$x = 3 - ( - 2)$

$x = 5$