| NOTHING _ BUT _ MATHS site by Charavee Bunyasiri |
| Navigater |
| Solving Equations |
| Using algebra to solve equations! |
| Having an '=' equal sign means that something is equal to something. This is why when things are equal they are called equations! You can think of a balanced scale. To solve 2x+7=17 you need to get x on its own on one side of the scale and the numbers on another side of the scale. First subtract 7 from both sides so we can get rid of the 7 on the left side so it leave us with 2x! |
| 2x+7-7 = 17-7 2x = 10 |
| The now you know what is 2x equal to! 2x equals 10! So to find what is x you need to divide 10 by 2! |
| 2x = 10 x = 10/2 x = 5 |
| So x equals 5. x=5 is a solution of 2x+7=17! |