So first do distributive property, which makes it 128x+128=512, then subtract 128 from both sides which makes it 128x=384, then divide by 128 on both sides and you get x=3.
answer: x=3 work cited: 128(x+1)=512 distribute 128 into parenthesis 128x+128=512 subtract 128 and move it to the other side of parenthesis 128x=384 lastly divide the 128 from the x to the 384 128x/128=384/128 x=3
