Answer the following math problem, and you will get a wealth of 80 (well, give me another 30 wealth rewards) (if you add 10 wealth value to me within 12 hours).

1. 1- 1/ 10=9/ 10

2. If CDs is reciprocal.

Then the original formula = 3x-(0+1) x.

=2x

Because x= plus or minus 1.

So the original formula = plus or minus 2.

3.(99- 1)/2+ 1- 100

=-55

You didn't copy the question completely, and I don't know what you asked.

5.0- 1=- 1

6. All positive numbers

7. Because AB < 0, there are different numbers, -3-5=-8 3-(-5)=8.

8.1250m (4+6) \ 0.8 *100 =1250m

9 degrees Celsius or (-3 degrees Celsius)

10. 1 1a+2

1 1.( 1) Company A: 30+0.4x

Company B: (x- 100)*0.9 (this answer just contains 100min).

(2) 150min, Company A will spend 60 yuan, and Company B will only spend 45 yuan, so Company B is chosen at this time.

12. Because y is a rational number with the smallest absolute value.

So y=0

Because x is a negative integer greater than -2.4.

So x=- 1 or -2.

The next step is calculation, and the answer is -8 or-1.

13.

( 1)24 4.8

(2) I don't understand, sorry.

14.2a-2b

15.( 1)bh/2-ah/2

(2)S=6

16. I can't see it directly. Please type the subject ... it's usually easy to see. I'm good at this.

17. You didn't shoot this question clearly either. Don't shoot it like this. You'd better stop looking for energy and type it so that I can help you.

I'll help you solve the rest you can't type clearly, and then you can adopt it.