Primary equation 45-3x equals 18 + 2x

45 - 3x = 18 + 2x
2x + 3x = 45 - 18
5x = 27
x = 27÷5
x = 5.4

If the equation x-3 = 1-2x is transformed into 3x = 4, then both sides of the original equation are added----------

3x-(x-3)=2x+3,4-(1-2x)=2x+3

-How to solve the equation 18 + 3x = 2x ^ 2?

2x^2-3x+18=0
x^2-3/2x+9=0
(x-3/4)^2+135/16=0
Obviously X has no solution

Zero = mouth ten mouth ten mouth ten mouth zero + mouth = 55 zero = () mouth = ()

44 11

Negative nine and twenty-four times twelve
Simple algorithm

-（9+24/25)*12
=-（225+24）/25 * 12
=-2988/25
The algorithm of simple points is as follows
-（9+24/25)*12=-（108+288/25）==-2988/25

Xiaoxiao took 100 yuan to the bookstore to buy a book. She bought a story book and a copybook, a total of 38 yuan, but the salesman only gave her 2 yuan. Do you know why?

Because Xiaoxiao took 100 yuan to buy books in the bookstore, when she paid, she didn't give all the 100 yuan to the salesperson. She just gave the salesperson 38 + 2 = 40 yuan, so the salesperson only gave her 2 yuan

The number 30 40 50 60 70 80 90?
Just spell it out

ten 10
twenty 20
thirty 30
forty 40
fifty 50
sixty 60
seventy 70
eighty 80
ninety 90

Move a match to make it correct. 11 plus 1 plus 1 minus 111 equals 4
fast

1+1+1-1+1=4

In the opinion of Xiao Ming and Xiao Gang, we all agree with his plan

In Xiao Ming's and Xiao Gang's opinion, we all agree with his (our) plan. This is a good one

In 1990, 1996, 1998, 2000, 2008, 2010 these years, the leap year of the year______ ．

1990÷4=497… 2，1996÷4=499，1998÷4=499… 2，2000÷400=5，2008÷4=502，2010÷4=502… So the year of leap year is 199620002008

Primary equation 45-3x equals 18 + 2x