Question

решите уравнения, - 5 * ( - 1 1⁄4) = 3 Х - 4 5⁄4; и ____ - 5 * ( - 1 1⁄4) = 3 Х - 4 5⁄4;

Answer 1

- 5 * ( - 1 1⁄4) = 3 Х - 4 5⁄4-5/1*(-5/4)=3х-21/4
25/4=3х-21/4
25/4+21/4=3х
3х=46/4
х=46/4:3
х=46/4:3/1
х=46/4*1/3
х=46/12
х=3 10/12
х=3 5/6