Question

What number makes the expression −7+[?]+b⋅1 equivalent to b ?

Answer 1

can you say that but in a different way

Answer 2

To make the expression −7 + [?] + b⋅1 equivalent to b, the number in the bracket must be 7. This is because when we substitute 7 for [?], the expression becomes −7 + 7 + b⋅1, which simplifies to b.

Answer 3

Sure! Another way to express it is that the number in the brackets that makes the expression equivalent to b is the additive inverse of -7. In other words, it is the number that, when added to -7, cancels out its value and leaves us with just b. That number is 7.