Question

2x + 3y = 4 3x - y = - 5 by subsubstitution method

Answer 1

sorry dont know.......

Answer 2

Answer:

x = -1 ; y = 2

Step-by-step explanation:

2x + 3y = 4     ---(1)

3x - y = - 5       ---(2)

from equation (1)

2x + 3y = 4

x = (4-3y/)2            --------(3)

put the value of x in eq (2)

3x - y = - 5

3 {(4-3y/)2} - y = -5

(12 - 9y )/2 - y = -5

(12 -9y -2y) /2 = -5

12 -9y -2y = -5 ×2

-11y = -10 -12

y = -22/-11 = 2

put the value of y in eq.(3)

x = (4-3y/)2

(4 - 3×2)/2

-2/2 = -1