The equation does not contain x and so x is indeterminate: it cannot be found from the information available.
You multiply both sides by 5 to clear the fraction and get the answer x equals 15.
Give us the whole equation, and we can help.
It is an incorrect equation.
20 = y/5 is an equation. It is true, only if y = 100. To find this result systematically, multiply both sides of the original equation by 5.
algebraic
You find the gradient of the curve using differentiation. The answer is 0.07111... (repeating).
42 over 48 equals 8 OR 42/48 = 8 is an incorrect mathematical equation.
x equals 4 over 35
no.
It is an equation and the value of x is 91
s=15
It is an equation and the value of a is 16