Question

identify each as an equation or and expression 3x + 1 = -21 x = 2x + 5 21 multiply - 13 + 11x - 3.7 x - 13 1/2 x equals 5 + 3 1/2× + 5

Answer 1

`3x+1=-21x=2x+5_{\text{ }}(Equation)`
`-13+11x-3.7x_{\text{ }}(Expresssion)`
`x-13(1)/(2)x=5+3(1)/(2)x+5_{\text{ }}(Equation)`

An expression can be evaluated, while an equation can be solved. An expression is basically an incomplete mathematical equation. It cannot have an answer or solution.