Question

Determine whether the statement is sometimes, always, or never true. If ax+b-4=b and doesn’t equal 0 then x=4/a?

Answer 1

Start with expression $ax+b-4=b.$

1. Separate terms - with x leave in left side, without x write in right side:

$ax=b-b+4,\\ \\ax=4.$

2. Divide the last expression by a ($a\neq 0$):

$x=\dfrac{4}{a}.$

Answer: this statement is true when $a\neq 0$.