exam Maths Puzzle Numerical Ability

what is the difference between algebra and equations???
help me please i have test on Thursday

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exam Other Question

find the LCD of
1 1
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1 - x^2 x - 1 48. Vinegar has a hydronium-ion concentration of 1.26 x 10^-3 mole per liter. determine the pH of vinegar and state whether it is an acid or base.