The answer is 3/14. The complex fraction simplifies into 5/14, and 5/14-1/7 is 3/14
Answer:
6. x = 3 7. x = 120 8. x= -5
Step-by-step explanation:
the first question is x(-4) + 3 = -9
find the value of x :
-4x + 3 = -9
we can subtract 3 on both sides since we have a value of 3 on the left, which will cancel the value out.
-4x = -12
-4(3) = -12
therefore the answer to problem 6 is x=3
and for 7 :
x / 6 - 9 = 11
we can add 9 on both sides which will cancel it out;
x/6 = 20
120/6 = 20
therefore the answer to the question 7 is 120.
For problem 8 it says :
-3x -5 = 10
we can add 5 on both sides to get:
-3x = 15
-3(-5) = 15
therefore the answer to problem 8 is -5
That is a simple polynomial addition:
(7w3-4w+3)+(5w3-3w-3)
= <span>(7w^3 - 4w + 3) + (5w^3 - 3w - 3)
= </span>7w^3 - 4w + 3 + 5w^3 - 3w - <span>3
= 12w^3 - 7w
= w(</span><span>12w^2 - 7</span>)
Answer:
k=2
Step-by-step explanation:
7(k+8)=70
We move all terms to the left:
7(k+8)-(70)=0
We multiply parentheses
7k+56-70=0
We add all the numbers together, and all the variables
7k-14=0
We move all terms containing k to the left, all other terms to the right
7k=14
k=14/7
k=2
Your answer would be x= 2
