3x+2(4+6x)=113
solution: x=7
first step: removing the parantheses — distribute 2 which would make it 3x+8+12x=113
second step: collect like terms — 3x + 12x = 15x which would make the equation 15x+8=113
third step: move the constant to the right — 15x=113-8
fourth step: calculate — 15x=105
fifth step: divide both sides which would make the answer x=7
Hoped this helped !!