Question

rezolvați ecuația: 4(x+3)-2(x+1)=20​

Answer 1

4 · (x + 3) - 2 · (x + 1) = 20

4x + 12 - 2x - 2 = 20

2x + 10 = 20

2x = 20 - 10

2x = 10 | : 2

x = 5

Answer 2

$\it 4(x+3)-2(x+1)=20 \Rightarrow 4x+12-2x-2=20 \Rightarrow 2x+10=20\bigg|_{-10}\Rightarrow \\ \\ \Rightarrow 2x=10\bigg|_{:2} \Rightarrow x=5$