а)(2x-4)÷(-1\3)=-7; (-1\3)*(-7)=(2x-4); 7/3=2x-4; 2x=7/3+4; 2x=6.1/3; x=19/3*1/2=19/6=3.1/6
б)y÷3.2\9=-8\93; y=-8/93 * (-29/9); y=232/837;
а)(2x-4)÷(-1\3)=-7; (-1\3)*(-7)=(2x-4); 7/3=2x-4; 2x=7/3+4; 2x=6.1/3; x=19/3*1/2=19/6=3.1/6
б)y÷3.2\9=-8\93; y=-8/93 * (-29/9); y=232/837;