exam Maths Puzzle Numerical Ability

solve liner equation: 2x+6=10x+6

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exam Other Question

evaluate the polynomial when x= -1, y=2, z=3

12^4y^2z+8x^3y-11x^7y+5x^5yz^2 the units digit of a two digit number is 3 less than its tens digit. if the number is divided by the sum of its digits, the qoutient is 6 and the remainder is 8. find the number?