solve the system of equations 2r + 2s = 50 and 2r – s = 17. -General Knowledge

solve the system of equations 2r + 2s = 50 and 2r – s = 17. -General Knowledge
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Subtract eq1 from eq2: (2r – s = 17) - (2r + 2s = 50): -3s = -33 s = -33/-3 s = 11 Solve for r: 2r + 2(11) = 50 2r = 22 = 50 2r = 50 - 22 2r = 28 r = 28/2 r = 14 set: r = 14, s = 112r + 2s = 50 and 2r – s = 17
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