An equation is an expression or statement of equivalence or "sameness" between two (or more) things. It might be as simple as a conversion factor like this:
36 inches = 3 feet = 1 yard
Or it could be some simple expressions using numbers thus:
5 + 7 = 12, or 1/2 + 1/3 = 5/6
Perhaps it is an expression such as this electrical formula:
P = I x E
where P = power in watts, I = current in amperes or amps, and E = voltage in volts. (It tells us that if we have 1 volt driving 1 amp of current through a component, we have 1 watt of power developed in that component.)
We could move on to a bit more complex algebraic expression:
ax2 + bx + c = 0
An equation tells us that all of that which is on one side is equal to or the same as all that which is on the other side. It is a mathematical expression of that equivalence.
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Numerals are what MAKE the equation.
an equation is a number sentence with and = sign
A solution to an equation is a set of values for the variables in the equation which make it true.
An equation is two expessions that have equal values
what does equation mean