Solving one-dimensional one-time equations

Practical problems and unary one-time equations

General steps: 1. Trial and adjudication of test instructions,

2. Set and set unknown

3. Column, according to the equation of equal relations

4. Solving and solving equations

5. Answer and write the answers

The general steps to solve a one-dimensional equation:

1. Go to the denominator

2. Go to Brackets

3. Move Items

4. Merging similar terms

5. Coefficient of 1

Title 1: There are a number of parts processing tasks, a separate processing takes 20 hours, B alone processing takes 10 hours, a part of the processing of a second task, the rest of the task is completed by the B alone, b less than a 5 hours of processing, a processing for a few hours?

Set up (x+5) hours of nail processing

b Processed for x hours

X/10 + (x + 5)/20 = 1

2x + x + 5 = 20

2x + x = 20-5

3x = 15

x = 5

The processing time is x+5=10 (hours).

Question 2: Solution Equation X/3-(x-1)/2 = 1

2x-3 (x-1) = 6

2x-3x = 3

-X = 3

x =-3

Solving one-dimensional one-time equations