(A). the correct solution is =2x+4=10
2x=10-4(Collection of terms).
2x=6(Divide by the coefficient of the unknown (x).
: 2x/2=6/2
x=3
(B). the mistake oliver made was that he added the equation instead of subtracting it = 10+4 , instead of 10-4. before dividing.
Mark As Brianliest
