Question

2(a+5)+3(a+4)=3a+11

Answer 1

2*a+ 2*5+ 3*a+ 3*4= 3a+11
2a+3a+10+12= 3a+11
5a+22= 3a+11
5a-3a=11-22
2a= -11
a= -11/2

Answer 2

2(a+5) + 3 (a+4) = 3a + 11
2a + 10 + 3a + 12 = 3a + 11
2a + 3a + 10 + 12 = 3a + 11
5a + 22 = 3a + 11
5a - 3a = 11 - 22
2a = -11
a = -11 /2
a = -5,5

Resposta : a = -5,5    ou fracionado  -11/2