exam
Maths Puzzle
Numerical Ability
Solve the system by substitution. x + y = 12
y = 2x
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exam Other Question
x + 2y - 7z = -1
3x + 7y - 24z = 6
x + 4y - 12z = 26
Express Logb r3s/t2 in terms of logarithms of r,s, and t. ( 3 and 2 are exponents and the / is not divide it is a fraction.