Question

When 4[0.5+2.5y-0.7x-1.3+4] is simplified, what is the resulting expression?

Answer 1

The resulting expression is:

`4\left[0.5+2.5y-0.7x-1.3+4\right]\:=-2.8x+10y+12.8`

Explanation:

Given the expression

`4\left[0.5+2.5y-0.7x-1.3+4\right]\:`

simplifying

`=\left(4\right)\left(0.5+2.5y+-0.7x+-1.3+4\right)`

`=\left(4\right)\left(0.5\right)+\left(4\right)\left(2.5y\right)+\left(4\right)\left(-0.7x\right)+\left(4\right)\left(-1.3\right)+\left(4\right)\left(4\right)`

`=2+10y-2.8x-5.2+16`

`=-2.8x+10y+12.8`

Thus, the resulting expression is:

`4\left[0.5+2.5y-0.7x-1.3+4\right]\:=-2.8x+10y+12.8`