How to do the equation of 0.8x-2 = 0.6x + 6? Shift the term to 0.8x-0.6x = 6 + 20.2x = 8, x = 8 △ 0.2x = 40

How to do the equation of 0.8x-2 = 0.6x + 6? Shift the term to 0.8x-0.6x = 6 + 20.2x = 8, x = 8 △ 0.2x = 40

transposition
It's 0.6 on the right and 0.6 on the left
So it's going to be 0.6x instead of 0.6x
At the same time, subtract 2 from the left and add 2 to the right
So 0.8x-0.6x = 6 + 2
(0.8-0.6)x=8
0.2x=8
Divide both sides by 0.2
x=8÷0.2
x=40

Given that one root of equation 5x2 + kx-6 = 0 is 2, find its other root and the value of K

Let the other root be x1. According to the meaning of the title, we get X1 + 2 = - K5, x1 × 2 = - 65, and the solution is X1 = - 35, k = - 7

It is known that one root of the equation 5x2 + KX + 2K = 0 about X is 1 / 2. Find its other root and the value of K
Fast, 45 minutes to school

Taking x = 1 / 2 into the equation, we get the following result:
5×1/4+k/2+2k=0
5k/2=-5/4
10k=-5
k=-1/2
The equation is: 5x & # 178; - X / 2-1 = 0, equivalent to 10x & # 178; - X-2 = 0
(2x-1)(5x+2)=0
2x-1 = 0 or 5x + 2 = 0
X = 1 / 2 or x = - 2 / 5
I've told you the detailed steps. Please accept them. If you don't understand, you can ask