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2 + 2x - y - x - 2y - 2x - y = 2 + (2*(-3)) - (-2) -(-3) - (-2*2) - (-3*2) - (-2) =
2 + (-6) + 2 + 3 + 4 + 6 + 2 = 10
b) 2a + 3b + 3a + b + 2 + 4a + 3 ( dla a = - 4 ; b= -1)
2a + 3b + 3a + b + 2 + 4a + 3 = 2*(-4) + 3*(-1) + 3*(-4) + (-1) + 2 + 4*(-4) +3 =
-8 + (-3) + (-12) + (-1) +2 + (-16) +3 = -40 + 5 = -35