exam Maths Puzzle Numerical Ability

Solve by the substitution method.

4x-5y = 21

5x+21= y

Read Solution (Total 0)

exam Other Question

Can you help me find a example of when log(A+B) = log(A) + log(B) would be true? (9x+2)+(4x-1)-(6x+3)+4(x-1)=12
confused with the previous problem and answer. New one. thanks so much