exam Maths Puzzle Numerical Ability

4b-5=-t for the b
+5 +5
4b=-t+5
4b/4=t+5/4
b= -t+5/4

is this right?

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exam Other Question

Draw the graph of this equation:y=1/3x-3 A student was given the following problem: 4x^2 -9/4x^2 +12x + 9 divided by 6x -9 . He states his answer to the problem as 3(2x -3). Is he correct? If not, explain why. What would you suggest he do to solve the problem?