exam Maths Puzzle Numerical Ability

Find three consecutive odd integers such that three times the sum of the first and third is 18 greater than 4 times the second

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exam Other Question

pls.give me instruction on how tosolve equation w/sign numbers solve each of the following systems by using either addition or substitution. If a unique solution does not exist, state whether the system is dependent or inconsistent.
10x+2y=7
y=-5x+3