Answers

2015-06-16T19:33:31+05:30
5x + 2x = 70 
⇒ 7x = 70
⇒ x = 70/7
⇒ x = 10 .
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2015-06-16T19:34:36+05:30
5x + 2x = 70
7x = 70
x = 70/7
x = 10
0