Answer:
x = [tex]\bf~\frac{2}{7}~or~0,285[/tex]
Step-by-step explanation:
5x + 2(x + 1) = 4
5x + 2x + 2 = 4 (here we got rid of the parenthesis)
7x + 2 = 4 (here we summed both of our x values)
7x = 4 - 2 (here we took #2 to the other side of the equation)
7x = 2 (we subtracted 4 - 2)
x = 2 / 7
x = [tex]\bf~\frac{2}{7}~or~0,285[/tex]
Hope it helped,
BiologiaMagister