book Maths Puzzle Numerical Ability

How do you graph -2x+3y=-6 ?

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2. Jon spent 3/5 of the money he earned on school uniforms and 1/6 in school supplies. What part of his money was spent in all?

How do we add fractions with different denomina I need help in answering this problem:
a^2 + 7a + 6
I only need to factor it.