1. 100+96+90+х=360
286х=360
х=360-286=74
2. 110+70+55+х=360
235+х=360
х=360-235=125
3. 128+95+87+х=360
310+х=360
х=360-310=50
4. 100+84+х+х=360
184+2х=360
2х=360-184=176
х=176:2=88
<em> -8 -( -1/7) 2) -5/12 - (-4)= -8 +2/7 -5/12 +4=- 4 5/12+2/7=-4 35/84 +24/84=</em>
<em>-4 11/84</em>