Номер 1182
1) 4,9 – (5,2 – х) = –1,8
4,9 – 5,2 + х = –1,8
–0,3 + х = –1,8
х = –1,8 –(–0,3)
х = –1,5
2) 1,93 + (х – 3,93) = –4,01
1,93 + х – 3,93 = –4,01
х – 2 = – 4,01
х = –4,01 + 2
х = –2,01
3) –(х – 2 1/9) – 1 1/9 = 4 2/5
–х + 2 1/9 – 1 1/9 = 4 2/5
– х + 1 = 4 2/5
х = 1 – 4 2/5
х = –3 2/5