How do you find 4x - 2y if x = -1 and y = -5?

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Answer 1 · 2017-09-23T04:00:04

6

You just need to put the given values of $x$ $x$ and $y$ $y$ in the given expression and evaluate as:

$= 4 (- 1) - 2 (- 5)$ $=4(-1)-2(-5)$

Just remeber these parantheses rule to simplify this:

$a \cdot (- b) = - a \cdot b$ $a*(-b)=-a*b$
$- a \cdot (- b) = a \cdot b$ $-a*(-b)=a*b$

So by applying you will get:

$= - 4 \cdot 1 + 2 \cdot 5$ $=-4*1+2*5$

Simplify:

$= 6$ $=6$