exam Maths Puzzle Numerical Ability

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jk bisects LMJL. mLKJL=4X-7. mLMJL=9X-26.
Find x, mLMJK and mLMJL.
I know its....
(4x-7)+(4x-7)=9x-26
8x-14=9x-26....then what?

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