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Mathematics
Rose Chen
18 June, 11:41
What is the answer 90=5x - (2x-30)
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Haylie Patterson
18 June, 14:35
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Before we begin, note that:
-ve * + ve = - ve
+ve * - ve = - ve
+ve * + ve = + ve
-ve * - ve = - ve
Now, the given is:
90 = 5x - (2x-30)
To solve for x, we will need to separate the x on one side of the equation and get its value as follows:
90 = 5x - (2x-30)
90 = 5x - 2x + 30
5x - 2x = 90 - 30
3x = 60
x = 60/3
x = 20
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