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Mathematics
Gavin Garner
29 October, 12:41
Solve the equation. 6d - 3d + 2d - 6 = 4d
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Alina Johnston
29 October, 16:34
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The first thing you should do when solving equations is to check for like terms. If you do find any like terms, combine them.
6d - 3d + 2d - 6 = 4d
On the left-hand side, we can combine the d terms.
6d - 3d + 2d - 6 = 4d
5d - 6 = 4d
The next is to get the variable we're trying to solve for all alone. To do that, we'll have to add / subtract / multiply / divide on both sides of the equation.
5d - 6 = 4d
-6 = - d
Here I subtract 5d from each side of the equation which resulted the d variable almost being all alone. It's being multiplied by a - 1, which is the reason why it has a negative sign. To get rid of the - 1, divide both sides by - 1.
-6 = - d
-6 / - 1 = - d / - 1
6 = d
So, d is equal to 6.
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