book Maths Puzzle Numerical Ability

The number halfway between 6/7 and 1 is ___________.

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book Other Question

Please help me solve this fraction: 8(-3)/[(2+3)^3(2)]

I know you are supposed to do the exponent first but I can not remember if you add 2+3 then raise it to 3 or raise each f -12x+3=5--5x