№ 759
(7,2k+1.9k)+(33.5x-4.7x)=5.3k+28.8x
(9.82y-5.82y)+(37a-.075a)=4y+36.25a
(12.2a-8.6a)+(9.15-7.035)=3.6a+2.115
8.5x+(4.75-3.37)+9.3x=17.8x+1.38=2(8.9x+0.69)
80-(35.6+x)=11.5
80-35.6 - x=11.5
44.4-x=11.5
-x=11.5-44.4
-x=-32.9
x=32.9
(62.4+y)-13.4=91
62.4+y-13.4=91
49+y=91
y=91-49
y=42
9.15+(x-8.5)=21.77
9.15+x-8.5=21.77
0.65+x=21.77
x=21.77-0.65
x=21.12
0.175-(0.03-x)=0.15
0.175-0.03+x=0.15
0.145+x=0.15
x=0.15-.145
x=0.05
(50-x)+7.16=8.132
50-x+7.16=8.132
-x=8.132-50-7.16
-x=-49.028
x=49.028
100.3-(9.2-x)=97.64
100.3-9.2+x=97.64
91.1+x=97.64
x=97.64-91.1
x=6.54