ab + ac + a = 176
a(b + c + 1) = 176
a(10 + 1) = 176
11a = 176
a = 176 : 11
a = 16
ab+ac+a=176
ax(b+c)+a = 176
2a x 10=176
2a = 176:10
2a= 17,6
a= 17,6:2
a= 8,8
