(4y-y)x(9+4x+3y) Subtract the terms 3yx(9+4x+3y). Add the terms 3yx(4x+3y+9). Apply the distributive property 3yx4x+3yx3y+3yx9. Multiply the terms 12xy+3yx3y+3yx9. Multiply the terms 12xy+9ysq+3yx9. Solution = 12xy+9ysq+27y.............. (Note I put sq because my phone don’t allow 2 on a y)