Question

6c-9d=111 5c-9d=103
how to solve this problem ​

Answer 1

Answer:

it is a simultaneous equation.

the -9d can be cancelled to find the answer

Answer 2

Answer:

C=8 and d=-7

Step-by-step explanation:

first both equations are subtract we find the value of C and then putting the value of C in any equation then wo find value of d