<span>We move all terms to the left:
-840-(-15(-7x+7))=0
</span>We calculate terms in parentheses: -(-15(-7x+7)), so:
-15(-7x+7)
We multiply parentheses
105x-105
Back to the equation:
<span>
-(105x-105)
</span>
<span>We get rid of parentheses
-105x+105-840=0
We add all the numbers together, and all the variables
-105x-735=0
We move all terms containing x to the left, all other terms to the right
-105x=735
x=735/-105
x=-7
</span>
(a) 64
divide 16 by .25 and you will get 64
(b) 34
multiply 40 by .85
Is the number xx? I would take it as x.
Product for four and x. = 4x
Six less than product = 4x - 6
It should be 75 if you divide the area by the amount of sides. I don’t know if I’m right if I’m wrong I’m sorry!
-2x * 3x * -x
-6x² * -x
6x³