Question

Which of the following groups have like terms and which have unlike terms?
$1).$ $3a,8a,-6a$
$2).$ $6b,-4x,9m$
$3).$ $5n,-6p,-6y$
$4).$ $-16x,-8y,-3a$
$5).$ $-9z,15z,8z$
$6.$ $-4r,6r,-9r$

Answer 1

Two or more terms are called liked terms if they have the same variables along with their exponents.

$1).$ Like terms {only one variable '$a$'}

$2).$ Unlike terms {$3$ different variables '$b$', '$x$', '$m$'}

$3).$ Unlike terms {$3$ different variables '$n$', '$p$', '$y$'}

$4).$ Unlike terms {$3$ different variables '$x$', '$y$', '$a$'}

$5).$ Like terms {only one variable '$z$'}

$6).$ Like terms {only one variable '$r$'}