Question

two martians splott and fizzle have solved the equation 2x+4=-3x+14. examine the work of splott and fizzle. identify any errors in the martians caculations and explain, using complete sentences, what corrections they should make.

splott
2x+4=-3x+14
2x+4+3x=-3x+14+3x
5x+4=14
5x+4+4=14+4
5x=18
5x/5=18/5
x=18/5


fizzle
2x+4=-3x+14
2x+4-2x=-3x+14-2x
4=14-5x
4-14=14-5x-14
-12=-5x
-12+5=-5x+5
-7=x

Answer 1

for splot he is wrong in the fourth line,instead of +4 should be -4
fizzle is wrong in the fifth line ,4-14=-10 and not -12
in the 6th line divide by 5 and not +5