Решите уравнение с проверкой 1)x+(-5)=2 2) 8+y=-3 3) 14+x=-6 4)-6+x=-2 5)y+7=-13 6)x+11=-4
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Ответы на вопрос:
Х+ (-5) = 2 х= 2+5 х=7 =========== 7+(-5) =2 7-5=2 2=2 8+у=-3 у= -3 -8= -3 + (-8) у= -11 ============= 8+(-11) =-3 -(11 - 8)=-3 -3=-3 14+х=-6 х=-6 -14= (-6) + (-14) х= -20 =============== 14 + (-20) =-6 -(20 -14) = -6 -6=-6 -6 +х =-2 х= -2 +6 = 6-2 х=4 ============== -6 + 4 = -2 -(6-4) = -2 -2=-2 у+7=-13 у=-13 -7 = (-13) + (-7) у=-20 ================== (-20) +7 = -13 - (20-7)= -13 -13=-13 х+11=-4 х= -4 -11 = (-4) + (-11) х=-15 =================== (-15) +11 = -4 -(15-11)=-4 -4=-4
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