Equations
Fold
Math OP
Unfold
Linear algebra
Unfold
On line Solution of Monovariate Equation：
Input any unary equation directly, and then click the "Next" button to obtain the solution of the equation.
It supports equations that contain mathematical functions.
Input any unary equation directly, and then click the "Next" button to obtain the solution of the equation.
It supports equations that contain mathematical functions.
Current location：Equations > Monovariate Equation > The history of univariate equation calculation > Answer
Overview: 1 questions will be solved this time.Among them
☆1 equations
[ 1/1 Equation]
Work: Find the solution of equation 10[275+8(275+y)/21] = 19y .
Question type: Equation
Solution:Original question:
| 10 | ( | 275 | + | 8 | ( | 275 | + | y | ) | ÷ | 21 | ) | = | 19 | y |
| Left side of the equation = | 10 | × | 275 | + | 10 | × | 8 | ( | 275 | + | y | ) | ÷ | 21 |
| = | 2750 | + | 80 21 | ( | 275 | + | y | ) |
| = | 2750 | + | 80 21 | × | 275 | + | 80 21 | y |
| = | 2750 | + | 22000 21 | + | 80 21 | y |
| = | 79750 21 | + | 80 21 | y |
79750 21 | + | 80 21 | y | = | 19 | y |
Transposition :
80 21 | y | − | 19 | y | = | - | 79750 21 |
Combine the items on the left of the equation:
| - | 319 21 | y | = | - | 79750 21 |
By shifting the terms and changing the symbols on toth sides of the equation, we obtain :
79750 21 | = | 319 21 | y |
If the left side of the equation is equal to the right side, then the right side must also be equal to the left side, that is :
319 21 | y | = | 79750 21 |
The coefficient of the unknown number is reduced to 1 :
| y | = | 79750 21 | ÷ | 319 21 |
| = | 79750 21 | × | 21 319 |
| = | 250 | × | 1 |
We obtained :
| y | = | 250 |