Is x-18 + 22.5 = 40.5 an equation

Is x-18 + 22.5 = 40.5 an equation


yes



18(x+0.9)=22.5,


x+0.9 =22.5/18
x +0.9 =1.25
x = 1.25 -0.9
x =0.35



Is x-18 + 22.5 an equation


It's not an equation
The equation must have unknowns, it must be an equation. X-18 + 22.5 has unknowns, it is not an equation



How to solve the equation 40% x = 4.22/5 = 16


40%x=4.22/5=16
Solution 40% x = 16
X=40