<span>Just find the distance from -3 to 4. That's 7.
It is 7 units to the left of -3. Subtract 7 from -3. That's -10</span>
Supplementary angles add to 180 degrees. If A and B are both supplementary to C, the two angles must be congruent since A=B=180-C.
Answer:

Step-by-step explanation:
we have the expression:

We need to multiply the two terms in the first parenthesis by the two terms in the second parenthesis:

we solve each term taking into account the law of signs
(-)(-)=+
and
(+)(-)=-
also for the first term we use that 
thus we have:

it can be simplified a little more if we factor an r of the second and third term:

150x^5-60x^4-119x^3+5x-6/5x-1