3.4w=−5.1

w=1.5

w=1.7

w=−1.5

w=−1.7

w = -1.5

Step-by-step explanation:

To solve for w in the question below;

3.4 w=−5.1

All we need to do is to divide both-side of the equation by 3.4

3.4 w/3.4 = −5.1/3.4

On the left-hand side of the equation, 3.4 at the numerator will cancel-out 3.4 at the denominator leaving us with just w, while on the right-hand side of the equation negative 5.1 will be divided by 3.4. That is

w = -5.1/3.4

w = -1.5

the answer is 21%.