To solve the equation 3 – 39 = 3b – 39 = -78, we first simplify each side individually.
3 - 39 = -36
3b - 39 = -78
Next, we isolate the variable by adding 39 to both sides of the equation.
3b - 39 + 39 = -78 + 39
3b = -39
Finally, we solve for b by dividing both sides of the equation by 3.
3b/3 = -39/3
b = -13
Therefore, the solution is b = -13.
3
�
−
39
=
3b−39=
−
78
−78
1 answer