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2 December, 16:14
Two-fifths time a plus a over 2 equals a minus 2
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Jamarcus Chapman
2 December, 18:39
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Two-fifths time a plus a over 2 equals a minus 2 will be a=20
Step-by-step explanation:
We have to find a, by first writing the verbal expression into an arithmetic form as,
Two fifths times a = (2/5) a
a over 2 = a/2
a minus 2 = a-2
(2/5) a + (a/2) = a-2
We have to take LCM on LHS as 10.
(2*2 / 5*2) a + (a*5 / 2*5) = a-2
(4a/10) + (5a/10) = a-2
Moving 10 to the other side, we will get,
4a + 5a = 10 (a-2)
9a = 10a - 20
Grouping terms we will get,
10a - 9a = 20
a = 20
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