exam Maths Puzzle Numerical Ability

Can you please show me how to work this problem step by step?

-7+x+4+4x-x-3+6

Thank you!

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exam Other Question

Please help solve this one. thanks.
If a guy wire for a tree is 14 ft. long making a 41 degrees angle with the ground, how far is the base of the tree from the stake anchoring the wire. x-3 /5 = 2/3