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12-10-2016
Mathematics

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What is the value of t? :O

(A) -20
(B) -5
(C) 5
(D) 20

What is the value of t O A 20 B 5 C 5 D 20 class=

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Аноним Аноним

12-10-2016

3/5t -4 -7/10t = -2 (as you know 3/5 = 6/10) so
6/10t - 4 - 7/10t = -2
Simplify
-1/10t -4 = -2
add 4 to both sides
-1/10t - 4 + 4 = -2 + 4
-1/10t = 2
multiply -10 to both sides
-1/10t *(-10) = 2 * (-10)
Simplify
t = -20

Answer first one t = -20

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