*note negative times a negative equals positive and negative times positive is negative first: you multiply -4 by 3m which is -12m. second: you multiply -4 by -3 which is +12 third: find the invisible which is 1. (located right here: +(1) (-10+8m) fourth: multiply invisible 1 by -10 which is -10 fifth: multiply invisible one by +8m which is +8m sixth: combine like terms seventh: answer
