book Maths Puzzle Numerical Ability

solve -3(x-1) = 12 +6x a)-1 b)0 c) all real numbers d) no solution

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book Other Question

in the polynomial below, put it in standard form, what is the degree, leading coefficient and the coefficient of y variable term?


5xpower2 - 2x + 10y - 6xpower 2 - 7 + x
please help!!!

word problem:

How many liters (L) of a 10% silver iodide solution must be mixed with 9 L of a 4% silver iodide solution to get a 6% solution?

thanks