Răspuns :
(a+7)x2 +174 :6=100-3
(a+7)x2+29=97
(a+7)x2=97-29
(a+7)x2=68
a+7=68:2
a+7=34
a=34 -7
a=27 V:(27+7) x 2+ 29 = 97
(a+7)x2+29=97
(a+7)x2=97-29
(a+7)x2=68
a+7=68:2
a+7=34
a=34 -7
a=27 V:(27+7) x 2+ 29 = 97
Not. nr cu "x".
[(x+7)·2]+174:6=100-3
(2x+14)+174:6=97
(2x+14)+29=97
2x+14=97-29
2x+14=68
2x=68-14
2x=54
x=54:2
x=27