Respuesta :

Answer

                                               HOPE THIS HELPS!!!!!

Step-by-step explanation:

2+5=20-20-bx3   ~ calculate the sum reorder ~

7=20-3b      ~move terms~

3b=20-7      ~subtract the numbers~

 3b=13   ~divide both sides by 3~

SOLUTION:  b=13/3               ALTERNATIVE FORM: b=4  1/3   OR  b=4.3