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Andrews
Mathematics
5 September, 14:33
5 (v-3) - 7v=1
What is v?
+5
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Ruffe
5 September, 14:44
0
5 (v-3) - 7v=1
mutiply the bracket by 5
(5) (v) (5) (-3) - 7v = 1
5v-15-7v
5v-7v-15 - combing like terms
5v-7v-15 = 1
-2v-15 = 1
move - 15 to the other side
sign changes from - 15 to + 15
-2v-15+15 = 1+15
-2v=16
divide by - 2 for both sides
-2v/-2 = 16/-2
Cross out - 2 and - 2, divide by - 2 then becomes 1*1*v = v
v = - 8
Answer: v=-8
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