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The first mathematics solves the one-dimensional equation (2). Exercise 3.3 The third question and the exercise on page 10 1. Find the answer! ! ! Online, etc
There is a book, but you can't explain clearly the sentence "Equation (2) Exercise 3.3, Question 3 and 10 1 page exercise". Please indicate which page it is.

If it is the third question on11page A, it is done like this.

2x- 1/0.7=x/0.3- 1/7

Multiply both sides by 2 1 to get (2x-1/0.7) × 21= (x/0.3-1/7 )× 21.

That is 30(2X- 1)=70X-3.

Remove the bracket and get 60x-30=70x-3.

Move this item to get-10x=27.

Divide both sides by-10 to get x=-2.7.

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