Can you help solve 3a + a = 16

3a + a = 16
4a = 16 | /4
a = 4

3a means a + a + a so 3a +a is (a + a + a) + a which is a+a+a+a which is 4a does that help?

Think of it this way, if you have 3 bananas in your and and are given one more banana how many bananas do you have? It works the same with apples, pears, onions and mathematical variables.

So with that in mind let's do your problem:

3a + a = 16

4a = 16

a = 16/4

a = 4

hope this helps.

4a = 16
a = 4

3a+a=16
4a=16
a=4