Two thirds x-half x + 1 and two fifths = 3.4

Two thirds x-half x + 1 and two fifths = 3.4

Two thirds x-half x + 1 and two fifths = 3.4
(two thirds to one half) x = 3.4-1 and two fifths
One sixth x = 2
X = 2 △ 1 / 6
X=12

Half (2x-1) - 3 (two thirds x + Half) = half x
I make x-half-2x-three-half = half X
-X-2 = half x
Half x = 2
x=4
After checking my calculation, I found that it was wrong! Where was I wrong! I was so anxious

Half (2x-1) - 3 (two thirds x + Half) = half XX-1 / 2-2x-3 / 2 = 1 / 2x-x-2 = 1 / 2XX + 1 / 2x = - 23 / 2x = - 2x = - 2x2 / 3x = - 4 / 3 if you don't understand this question, please click "praise" in the lower right corner if you are satisfied. If you have other questions, please take this question and send it out and click my

One third * (x-1) - one half * (2x 1) = 0

It's equal to 360. I'm not very clear about the specific formula

What does 43-0.5 mean? 0.5 × 43 means 4 × 2 / 5 means 2 / 5 × 1 / 2 means 8 / 9

43-0.5 means that the sum of two known addends is 43, one of which is 0.5, and how much is the other addend
0.5 × 43 is the number of 43 0.5
Four by two fifths means what is two fifths of four
Two fifths by one half means what is one-half of two fifths
8 / 9 △ 1 / 2 means that the product of two known factors is 8 / 9, one of which is 1 / 2, and how much is the other factor