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Change the subject of a linear formula requiring two steps. - YouTube YouTube Start of suggested clip End of suggested clip Means to get a particular variable in your equation. On its own. So if you want to make x theMoreMeans to get a particular variable in your equation. On its own. So if you want to make x the subject of this equation. It means we want to make the x on its own. And also remember with equations.

CHANGING THE SUBJECT OF A FORMULA When a variable which forms a part of the formula is made subject, we say we have changed the subject of the formula. Examples: In the formula S=2¶r(r+h), make h the subject. Make m the subject if F = m v ? m u T.

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.

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.

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.

When changing the subject of a formula, we rearrange the formula so that we have a different subject. In other words, if you move a term from one side of the equals sign to the other, change the operation to do the opposite. (The opposite of an operation is called its inverse).

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.