20xe-(1950+550):100=6175
20xe-2500:100=6175
20xe-25=6175\+25
20xe=6200
e=6200:20
e=310
b)35xf+(800-752:4):2=551
35xf+(800-188):2=551
35xf+612:2=551
35xf+306=551\\\-306
35xf=245
x=245:35
x=7
c)g:25+(100-1632:51)x2=286
g:25+(100-32)x2=286
g:25+132x2=286
g:25+264=286\-264
g:25=22
g=22x25
g=550
244-hx5+(300-6x16):4=225
244-hx5+(300-96):4=225
244-hx5+204:4=225
244-hx5+51=225\-51
244-hx5=174
244-174=hx5
hx5=70
h=70:5
h=14
