How do we evauluate a variable expression?

mathematical question or:mathematical questionor:In algebra letters can stand for numbers. When we substitute a specific value for each variable, and

mathematical question

or:mathematical question

or:In algebra letters can stand for numbers. When we substitute a specific value for each variable, and then perform the operations, it's called evaluating the expression.Example evaluate the expression 3y + 2y when 5 = y.1.\tReplace each letter with its assigned value.The first step: 3(5) + 2(5)(Use Parentheses!) 2.\tPerform the operations, to find the value of the expression.The second step:3(5) + 2(5) = 15 + 10 = 25

or:3+5=8+2+5=7 totaling15

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