exam Maths Puzzle Numerical Ability

Please help me!!!
How do I simplify this equation.
-12-|7-11|-[3-(-9)]
PLEASE HELP!!!

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exam Other Question

Graph the following equations; calculate the slope, x-intercept, and y-intercept, and label the intercepts on the graph.

y = x + 3 Let f(x)=x^2+4, and g(x)=x-1 Compute (g 0 f)(x), (f 0 G)(x)