solve using transformation

Question

b - 4 = 4 + 7b divided by 3

A: b = -6/8

B: b = -2

C: b = -4/5

D: b = -4

Answer 1

The statement is .

Multiply 3 to each side.

Cancel common terms.

Apply distributive property : .

Subtract 3b to each side.

.

Therefore,the solution of .

Comments

not bad, using the better formula for distributive property that is a(b - c) = ab - ac.