Question

Which among the following is a two step equation?

• A. $x+y=17$
• B. $3x+9=18$
• C. $x+10=16$

Answer 1

The correct option is B $3x+9=18$

$\underset{–}{ConceptInvolved:}$

Two step equation involves two mathematical operations in it.

$\underset{–}{Method:}$

$x+y=17$ involves only Addition as the mathematical operation in it. This is not a two step equation.

$x+10=16$ involves only Addition as the mathematical operation in it. This is not a two step equation.

$3x+9=18$ involves Addition and Multiplication as the two mathematical operations in it. This is a two step equation.