First, subtract #color(red)(8)# from each side of the equation to isolate the term with parenthesis while keeping the equation balanced:
#4(x + 1) + 8 - color(red)(8) = 24 - color(red)(8)#
#4(x + 1) + 0 = 16#
#4(x + 1) = 16#
Next, divide each side of the equation by #color(red)(4)# to eliminate the parenthesis while keeping the equation balanced:
#(4(x + 1))/color(red)(4) = 16/color(red)(4)#
#(color(red)(cancel(color(black)(4)))(x + 1))/cancel(color(red)(4)) = 4#
#x + 1 = 4#
Now, subtract #color(red)(1)# from each side of the equation to solve for #x# while keeping the equation balanced:
#x + 1 - color(red)(1) = 4 - color(red)(1)#
#x + 0 = 3#
#x = 3#