Question

7b-4.2=-3b+9.1

Answer 1

7b-4.2= -3b+9.1 we have to isolate the b so add 4.2 to each side
7b-4.2+4.2= -3b+9.1+4.2
the -4.2 and 4.2 cancel out
7b= -3b+13.3
then add 3b to each side
7b+3b= -3b+3b+13.3
the -3b and 3b cancel out
10b=13.3
divide each side by 10
b=1.33
and that is your answer

Answer 2

is that good?

Answer 3

yes