six less than the width n is 10 - n-6=10, If you subtract 5 from 6 times a number, you get 7 - 6z-5=7, 5 added to three times a number p is 8. - 5+3p=8, variable - symbols used to represent unknown values, coefficient - the numerical part of the term that has a variable with it, constant - a term that has a number but no variable, expressions having LHS and RHS equal.  - Equation, 7 more than three times n gives 1. - 3n+7=1, 6y-6=60 - If you take away 6 from 6 times y, you get 60., 3x=-9 and 4x=-12 - Equivalent equations,

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