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2x + 3 = 9x is a fairly simple linear equation (i.e., when graphed, it will be a straight line).
First, you want to isolate the x term on one side of the equation. To do this, you must take 2x and subtract it from both sides. Here is the result:
7x = 3.
Now, you want to completely isolate x itself, without any coefficient (in this case 7). Because 7 is being multiplied to x, you must divide 7 from both sides. Keep in mind that whenever solving an equation, whatever you do to change it must be done to both sides. Here is the result:
x = 3/7.
If you wish, you may use a calculator to divide 3 by 7, or you can just leave it as a fraction.
Wiki User
∙ 14y ago
lenpollock
2x + 3 = 9x
Subtract '2x' from both sides
3 = 7x
Divide both sides by '7'
7x/7 = 3/7
x = 3/7
Add your answer:
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53
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