Mr. Lindsay wrote the four expressions below on the board

Expression 1: 9 + 5 * - - 5 + 3*

Expression 2: 10 * + 3

Expression 3: * + 12

Expression 4: 4 (1 + 2*)

Which two expressions are equivalent to each other? Show your answer is correct by substituting a value for x.

Question

Dominique Kelly

Mathematics

11 March, 20:13

Mr. Lindsay wrote the four expressions below on the board

Expression 1: 9 + 5 * - - 5 + 3*

Expression 2: 10 * + 3

Expression 3: * + 12

Expression 4: 4 (1 + 2*)

Which two expressions are equivalent to each other? Show your answer is correct by substituting a value for x.

+3

Answers (1)

Know the Answer?

Tania Sweeney · Answer 1

The two equivalent expressions are 1 and 4

Let's substitute 2 for x

Expression 1

9 + 5 (2) - 5 + 3 (2) =

9 + 10 - 5 + 6 = 20

Expression 4

4 (1 + 2 (2)) =

4 (1 + 4) =

4 (5) = 20

When you substitute 2 for x in expression 1 and 4 you get the same answer of 20.

Mr. Lindsay wrote the four expressions below on the boardExpression 1: 9 + 5 * - - 5 + 3*Expression 2: 10 * + 3Expression 3: * + 12Expression 4: 4 (1 + 2*)Which two expressions are equivalent to each other? Show your answer is correct by substituting a value for x.

Mr. Lindsay wrote the four expressions below on the board

Expression 1: 9 + 5 * - - 5 + 3*

Expression 2: 10 * + 3

Expression 3: * + 12

Expression 4: 4 (1 + 2*)

Which two expressions are equivalent to each other? Show your answer is correct by substituting a value for x.