98+8x[1004-4x(8:2x2-4:4x2)]
98+8x[1004-4x(4x2-4:4x2)]
98+8x[1004-4x(8-4:4x2)
98+8x[1004-4x(8-1x2)]
98+8x(1004-4x6)
98+8x(1004-24)
98+8x980
98+7840=7938
[(28x5:2x10)x5]+[31x(600:5+112:4)]-83
[(140:2x10)x5]+[31x(120+28)]-83
[(70x10)x5]+(31x148) - 83
(700x5)+4588-83
3500+4588-83
8088-83=8005
400+480:4+[68:2+4x(20+12+18)]
400+120+[68:2+4x(20+12+18)]
400+120+[(34+4x(20+12+18)]
400+120+(34+4x50)
400+120+(34+200)
400+120+234
520+234=754
68:2+[564:2+4x(31x2+15x3-117:3)]
34+[282+4x(62+45-39)]
34+[2822+4x(107-39)]
34+(282+4x68)
34+(282+272)
34+554=588
94326-123x8:[848:4-(ax100+5x2)]+838149:3=373217
94326-948:[212-(ax100+10)]+279383=373217
94326-948:(212-100a-10)+279383=373217
94326-948:(212-10-100a)+279383=373217
94326-948:(202-100a)+297383=373217
94326-948:2(101-50a)+279383=373217
94326-279383-948:2(101-50a)=373217
373709-948:2(101-50a)=373217
373709-474(101-50a)=373217
-474(101-50a)=373217-373709
-474(101-50a)= - 492
(101-50a)=-474-492
(101-50a)= - 966
-50a= - 966+101
-50a= - 865
a=865:50
a=17,3
