5х+8/3+11х-1/6=-1, 4х+9/5-4+3х/2=4? ! - вопрос №8646478583111614954324 от maricn2102 02.02.2020 05:45

Question

Математика: 5х+8/3+11х-1/6=-1, 4х+9/5-4+3х/2=4? !

maricn2102 · Answer

5х + 8/3 + 11х - 1/6 = - 1 Общ.знамен. = 12
5х * 12 + 8 * 4 + 11х * 12 - 1 * 2 = - 12
60х + 32 + 132х - 2 = - 12
192х = - 12 - 32 + 2
192х = - 42
х = - 42/192
х = 7/32

4х + 9/5 - 4 +3х/2 = 4 Общ.знамен. = 10
4х*10 + 9*2 - 4*10 + 3х*5 = 4*10
40х +18 - 40 + 15х = 40
55х = -18 + 40 + 40
55х = 62
х =62/55
х = 1 7/55