"Wat" is the variable.
An equation in the variable n.
It is a linear equation in one variable r. The solution to the equation is r = 1.
It is an equation in one unknown variable, h.
This equals 21,060.
2 x 15
6 x 34?
Fifteen times forty-five equals six hundred and seventy-five (15 x 45 = 675)
nine times five and fifteen times three is all i know
-0.4 x 15 = -6
As usual when solving equations, you need to "isolate" the variable, in this case, the variable "x". 4x means 4 times x; if you divide both sides of the equation (the left side and the right side) by 4, you will have achieved this.