-2-1=-3
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10 - 4 or 65-34 is an example of a subtraction equation
because you undo the operation in the equation= to undo subtraction you add
It is not an equation and no solution is possible.
A situation equation follows the order of the story problem.For instance:Johnny has 8 apples, he eats some, and has 3 left.The situation equation would be: 8 - a = 3A solution equation is the equation that would help you find the solution. Your brain doesn't automatically know what "a" is, it has to rearrange the order of the equation and then solve.The solution equation would be: 8 - 3 = a, then you would solve it.
in an equation like y=5x+3 the 3 would be the y-intercept