exam Maths Puzzle Numerical Ability

I need to solve this quadratic equation:
x^2 � 3x = -6x � 1

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exam Other Question

Use the point-slope form to find a general form of the equation of the line whose slope is -1/3 and that passes through (2,3). How do I solve using two equations with two variables?

The units digit of a two-digit number is 4 times the tens digit. If the digits are reversed, the new number is 54 more than the original number. Find the number.