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GCSE Maths - How to Rearrange Formulas #48 - YouTube YouTube Start of suggested clip End of suggested clip And just subtract 4 from both sides. Giving us y minus 4 equals 3x. And to get rid of the 3 we justMoreAnd just subtract 4 from both sides. Giving us y minus 4 equals 3x. And to get rid of the 3 we just divide both sides by 3. But importantly it's the whole of the y minus 4 that we're dividing by 3.

To rearrange an equation so that another variable becomes the subject, perform the same operations on both sides of the equals sign so that eventually this variable is by itself on the left hand side. Performing the same operations on both sides makes sure that the left hand side is always equal to the right hand side.

When solving by rearranging, remember these rules: Use the opposite operation to move terms from one side to the other. Remember to always do the same operation to both sides of your equation. ... Work in backwards order of operations: Do addition and subtraction before you do your multiplication or division.

Rearranging Before Substitution in Systems of Two Equations - YouTube YouTube Start of suggested clip End of suggested clip And we want to solve for both x and y. You may be familiar with doing this when one of the equationsMoreAnd we want to solve for both x and y. You may be familiar with doing this when one of the equations is already solved for one of the variables. But these aren't so what do we do. Well.

Changing the Subject - Corbettmaths - YouTube YouTube Start of suggested clip End of suggested clip Remember we did the opposite to both sides. So p take away 2w is just p take away 2w. And on theMoreRemember we did the opposite to both sides. So p take away 2w is just p take away 2w. And on the right hand side we took away 2w to get rid of the plus 2w. So we're just going to be left with 2 l.

Rearranging Linear Equations - YouTube YouTube Start of suggested clip End of suggested clip So for example I have a positive 9x. So what I'll do is subtract 9x from both sides to get thatMoreSo for example I have a positive 9x. So what I'll do is subtract 9x from both sides to get that moved. Over. And you don't necessarily need to show all these steps.

Identify the variable you need to make the subject of the formula. Isolate the variable ? this step may look slightly different depending on the format of the question. Rearrange the equation so each term containing the term you want to be the subject is on one side of the equation ? normally the left-hand side.