exam Maths Puzzle Numerical Ability

Please help.

Please Evaluate the following.

-15+6/3

Thanks
JMS

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exam Other Question

4b+5/2b+1= 6b+1/3b-1 (solve the following rational equation by finding the lowest common denominator) I have 3 different problems that I am confused about. Please help me. The 1st one is2+3*5square root2-7. #2) (4/2)+4(5-2)square root 2. #3)-8-81/9*2square root 2+7. Can you pleas h