Решите уравнения на множестве Z x+70= -100 3*x=81 x:(-8)= -20 3x+72=0
X+70= -100 x = -100 -70 x = -170 3*x=81 x = 81 : 3 x = 27 x:(-8)= -20 x = -20 *(-8) x = +160 3x+72=0 3x = -72 x = - 72 :3 x= - 24
1)х=-100-70 х=30 2)х=81/3 х=27 3)х=-20*(-8) х=160 4)3х=-72 х=-72/3 х=-24