Question

Isabelle thinks of a number, u. She multiplies it by 3 , then she subtracts 8 and gets an answer of 18. Write an equation to describe this.

Answer 1

3u - 8 = 18

Explanation:

The equation 3u - 8 = 18 describes the operations Isabelle did.

• According to the order of operations, multiplication comes before addition, so the number would first be multiplied by 3.

• Then, 8 would be subtracted from the product of 3 and u to give 18 as a result/answer.