Question

How do you solve the simultaneous equations 3x+7y=26 and 4x+5y=13?

Answer 1

Answer:

Step-by-step explanation:

3x+7y=26

3x=26-7y

x=26-7y                          (i)

      3

now,

4x+5y=13

from (i)

4(26-7y) +5y=13

     3

104-28y + 5y=13

    3

104-28y+15y = 13

       3

104-13y=13×3

104-13y=39

-13y=39-104

-13y=-65

y=-65

   -13

y=5

now solve the eqation by putting the value of y