ALGEBRAIC EXPRESSIONS

Write each sentence as an algebraic equation.

1.
Sentence
Algebraic Equation
A number increased by nine is fifteen. y + 9 = 15
Twice a number is eighteen. 2n = 18
Four less than a number is twenty. x - 4 = 20

2
Sentence
Algebraic Equation
Twice a number, decreased by twenty-nine, is seven. 2t - 29 = 7
Thirty-two is twice a number increased by eight. 32 = 2a + 8
Twelve is sixteen less than four times a number. 12 = 4x - 16