Question

Resolva as equações do primeiro grau a) 5(x+1)=3(x+2)
b) 4(x+5)+3(x+5)=21

Answer 1

Resposta:A)5(x+1)=3(x+2)

5x+5=3x+6

5x-3x=6-5

2x=1

x=1/2 ou 0,5

B)4(x+5)+3(x+5)=21

4x+20+3x+15=21

4x+3x+35=21

x=21-35

x= -14