Question

Write and solve an equation that represents the following: Twenty more than a number is eighteen

Answer 1

Salutations!

Let the number be $x$

The equation would be: $x+20=18$

Lets solve this!

We need to always keep the variables aside, and the numbers aside.

$x=20-18$

$x=2$

Hope I helped (:

Have a great day!

Answer 2

The equation is
20+a=18

subtract 20 from both sides using additive property that leaves you with

a= -2