Question

solve the following simultaneous equation method: cross multiplication method substitution method elimination method comparison method
4x+5y =14
3x-7y = -11

7x+3y = -44
3x-2y-9 = 0​

Answer 1

Answer:

1) (1, 2)

Step-by-step explanation:

4x+5y=14......1

3x-7y= -11......2

multiply equation 1st by 3 and 2nd by 4

12x + 15y = 42.......3

12x - 28y = -44......4

subtracting equation 4th from 3rd

0 + 43y = 86

y = 86/ 43

y = 2

put the value of y in equation 1st

4x + 5y = 14

4x + 5 x 2 = 14

4x + 10 = 14

4x = 14 - 10

x = 4/4

x = 1

solution of given simultaneous equation is (1, 2)