exam Maths Puzzle Numerical Ability

Solve each of the following systems by addition. If a unique solution does not exist, state whether the system is inconsistent or dependent.

x + 5y = 10
-2x - 10y = -20

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exam Other Question

80. Work. Henry sold 120 magazines subscriptions in x+2 days. If he sold at the same rate for another week, ten how many magazines did he sell in the extra week? Find the equation, in standard form, with all integer coefficients, of the line perpendicular to 3x-6y=9 and passing through (-2,-1)