4y+3(2y+4)=11
I'm presuming you want to find the value of y?
So, first you can multiply out the brackets:
4y+3(2y+4)=11
4y + 3x2y + 3x4 = 11
4y + 6y + 12 = 11
10y + 12 = 11
So now you can subtract 12 from both sides of the equation:
10y +12 - 12 = 11 - 12
10y = -1
And now divide both sides by 10 to find the value of y:
10y/10 = -1/10
y = -1/10