Решите уравнение: 1) -5x = 30; 2) -0,8x = -5,6; 3) -7x = 4; 4) -6х = -8; 6) 40,5 : х = -9; 8) х : 2/7 = -1,4. 5) 2/3

1) -5x = 30; х=-6; 4) -6х = -8; х=4/3; 2) -0,8x = -5,6; х=7; 5) 2/3 х = - 3/8; х=-3/8 * 3/2=-9/16; 3) -7x = 4; х=-4/7; 6) 40,5 : х = -9; х= 40,5 : (-9)=-4,5;7) -32/63 : х = 8/21; х=8/21 * (-63/32)=1/1 * (-3/4)=-3/48) х : 2/7 = -1,4; х=-7/5 * 2/7=-2/5.