Answer:
Step-by-step explanation:
-5x+31+3x=3
move everthing to one side
-5+31+3x-3=0
add and subtract common terms
-2x+28=0
divide across by common denominator
-x+14=0
Solve for x
x=14
Answer:
90 stamps
Step-by-step explanation:
We can solve this by writing an equation.
(38+26)+26
64+26
90
Therefore, they have 90 stamps altogether.
Answer:
a=20
Step-by-step explanation:
You cross multiply: 9a=180
a=20.