(1)11X=19-8
(2)5X+9=72
(3)6Q+50=90
(4)2W+92=94
(5)1/3E-42=60-9
(6)2(R+8)=71
(7)1/3(T+3)=18
(8)7(Y-74)=96+Y
(9)10U-50=60
(10)6I-9=12
(11)4P-2P=70-9P
(12)6A-A=50
(13)2S=10-5S+6S
(14)6D-D=90
(15)1/3F-9=74
(16)8G-9=41+5G
(17)5H-4=15
(18)6J-9+6-4+3=11
(19)K-5=88
(20)2L+9-5+5+5=100
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