exam Maths Puzzle Numerical Ability

Simplify each algebraic expression

A 4a+9+3a-7

B 6 (3x+4) + 5 (2x-1)

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exam Other Question
WHAT IS THE STANDARD FORM AND HOW DO TRANSFORM A PROBLEM IN TO STANDARD FORM? Solve and Check for x

x/6 - x/8 = 1