exam Maths Puzzle Numerical Ability

Write 3 equations equivalent to 6x=10 and one that is non equivalent.
we came up with x=1.6-

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exam Other Question

a guy wire of lenght 50 feet is attached to the ground and ot the top of an antenna. The height of the antenna is 10 feet larger than the distance from the base of the antenna to t how do ou do this problem.....

1 1
- - -
x y
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1+ 1
-
x