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First of all it is NOT a maths equation, but a Maths Expression, because there is NO Equakls(=) sign.
However, as an expression the components can be added together.
-3n - n = -4n
NB . In maths the coefficient '1' is never shown ; the symbol just stands alone. . So '-1n' should be written as '-n'.
If Q=quarter, D=dime, N=nickel, and P=penny, then 3Q 2Q + 2D + 1N 2Q + 2D + 5P 2Q + 1D + 3N 2Q + 1D + 2N + 5P 2Q + 1D + 1N + 10P 2Q + 5N 2Q + 4N + 5P 2Q + 3N + 10P 2Q + 2N + 15P 2Q + 1N + 20P 2Q + 25P 1Q + 5D 1Q + 4D + 2N 1Q + 4D + 1N + 5P 1Q + 4D + 10P 1Q + 3D + 4N 1Q + 3D + 3N + 5P 1Q + 3D + 2N + 10P 1Q + 3D + 1N + 15P 1Q + 3D + 20P 1Q + 2D + 6N 1Q + 2D + 5N + 5P 1Q + 2D + 4N + 10P 1Q + 2D + 3N + 15P 1Q + 2D + 2N + 20P 1Q + 2D + 1N + 25P 1Q + 2D + 30P 7D + 1N 7D + 5P 6D + 3N 6D + 2N + 5P 6D + 1N + 10P 6D + 15P 5D + 5N 5D + 4N + 5P 5D + 3N + 10P 5D + 2N + 15P 5D + 1N + 20P 5D + 25P 4D + 7N 4D + 6N + 5P 4D + 5N + 10P 4D + 4N + 15P 4D + 3N + 20P 4D + 2N + 25P 4D + 1N + 30P 4D + 35P AND SO ON
5
7n -1n,0n,1n,2n,3n,4n,5n,6n,7n 1 2 3 4 5 6 7 8 9
3n=36 Write the equation n=12 Divide each side of the equation by 3 to get the variable alone.
It is a mathematical equation.