Question

Which expressions are equivalent to 35+30s-45t35+30s−45t35, plus, 30, s, minus, 45, t?

Answer 1

The correct option is B.
`5(7+6s-9t)` and C.
`(-35-30s+45t)* (-1)`.

Explanation:

Consider the provided expression.

`35 + 30s - 45t`

Option (A):
`7\cdot(5+30s-45t)`

Open parenthesis.

`35+210s-315t`

Which is not equal to the provided expression.

Option (B)
`5(7+6s-9t)`

Open parenthesis.

35+30s-45t

Which is equal to the provided expression.

Option (C)
`(-35-30s+45t)* (-1)`

Open parenthesis.

`35+30s-45t`

Which is equal to the provided expression.

Option (D)
`10*(3.5+3s-4.5)`

`35+30s-45`

Which is not equal to the provided expression.

Option (E)
`((35)/(2)- 15s + (45t)/(2)) \cdot(-2)`

Open parenthesis.

`-35+30s-45t`

Which is not equal to the provided expression.

Hence, the correct option is B.
`5(7+6s-9t)` and C.
`(-35-30s+45t)* (-1)`.