To solve two simultaneous equations - usually two equations with the same two variables each - you can use a variety of techniques. Sometimes you can multiply one of the two equations by a constant, then add the two equations together, to get a resulting equation that has only one variable. Sometimes you can solve one of the equations for one variable, and replace this variable in the other equation. Once again, this should give you one equation with a single variable to be useful.
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You can mutiply or divide the units to find the answer.
2 divide 75
Divide mutiply and add
24 divide 25 thn mutiply by 100
The quotient is negative.