Question

Write an equivalent expression by distributing the "-−" sign outside the parentheses: 2h-(-2.3k-4) 2h−(−2.3k−4)

Answer 1

`2\cdot h +(2.3\cdot k + 4)`

Explanation:

This expression is solved algebraically:

1)
`2\cdot h -(-2.3\cdot k - 4)` Given

2)
`2\cdot h +(-1)\cdot [(-1)\cdot (2.3)\cdot k + (-1)\cdot (4)]`
`(-1)\cdot a = -a`

3)
`2\cdot h + [(-1)\cdot (-1)]\cdot (2.3\cdot k+4)` Distributive property.

4)
`2\cdot h +(2.3\cdot k + 4)`
`(-a)\cdot (-b) = a\cdot b`/Modulative property/Result