Răspuns :
(a +7) x 2 + ( 174 : 6 ) = 100-3
(a+7 ) x 2 + 29 = 97
(a+7) x 2 = 97-29
( a+7) x 2 = 68
a+ 7 = 68 : 2
a+7 = 34
a= 34-7
a=27
(a+7 ) x 2 + 29 = 97
(a+7) x 2 = 97-29
( a+7) x 2 = 68
a+ 7 = 68 : 2
a+7 = 34
a= 34-7
a=27
(x+7)×2+(174:6)=100-3
(x+7)×2+29=97
(x+7)×2=97-29
(x+7)×2=68
(x+7)=68:2
(X+7)=34
x=34-7
x=27
(x+7)×2+29=97
(x+7)×2=97-29
(x+7)×2=68
(x+7)=68:2
(X+7)=34
x=34-7
x=27