There is the equal values method, so you can do:
x-4 = 4x-10 (remove x from both sides)
-4 = 3x -10 (add ten to both sides)
6 = 3x (devide by 3x)
2 = x
Check: (by plugging it into the equation)
y = 2-4 and y = 8-10
y = -2 and y = -2
that's matches so it is correct...
YOUR ANSWER IS:
(2, -2)
I hoped I helped sort things out, and have a great day!
55/78
= (55*(50/39)) / (78*(50/39))
= 70.(512820)/ 100
= 0.7(051282)
The final answer is 0.7(051282)~
Answer:
6x - 8 = 16
Step-by-step explanation:
Solve the equation for x
5(3x - 7) = 25 ( divide both sides by 5 )
3x - 7 = 5 ( add 7 to both sides )
3x = 12 ( divide both sides by 3 )
x = 4
Thus
6x - 8 = 6(4) - 8 = 24 - 8 = 16
D. Any set of number can be used as x.
Solve for x: by completing the square:
x^3 + 7 x^2 - 12 x - 18 = 0
The left hand side factors into a product with two terms:
(x + 1) (x^2 + 6 x - 18) = 0
Split into two equations:
x + 1 = 0 or x^2 + 6 x - 18 = 0
Subtract 1 from both sides:
x = -1 or x^2 + 6 x - 18 = 0
Add 18 to both sides:
x = -1 or x^2 + 6 x = 18
Add 9 to both sides:
x = -1 or x^2 + 6 x + 9 = 27
Write the left hand side as a square:
x = -1 or (x + 3)^2 = 27
Take the square root of both sides:
x = -1 or x + 3 = 3 sqrt(3) or x + 3 = -3 sqrt(3)
Subtract 3 from both sides:
x = -1 or x = 3 sqrt(3) - 3 or x + 3 = -3 sqrt(3)
Subtract 3 from both sides:
Answer: x = -1 or x = 3 sqrt(3) - 3 or x = -3 - 3 sqrt(3)
