Question

Solve the following simultaneous equations by comparison method
3a-4b=18
4a-5b=22

Answer 1

Answer:

b=3 a=2

Step-by-step explanation:

Answer 2

Answer:

a=-2

b=-6

Step-by-step explanation:

(3a-4b=18 )4 multiplying by 4

(4a-5b=22)3 multiplying by 3

we will get

12a-16b=72

12a-15b=66

sub them we get

b=-6

putting b= -6 in

3a-4b=18

we get

3a+24=18

therefore a=-2

HOPE IT WILL HELP.........!!!!!!!!!!!!!!