Answer :

[tex]a + 3(5a+8) = 72 [/tex]
First you want to multiple 3(5a+8):
[tex]a + (15a + 24) = 72[/tex]
Next, add a + 15a:
[tex]16a + 24) = 72[/tex]
Then, subtract 24 from both sides:
[tex]16a = 48[/tex]
Finally, divide both sides by 16:
[tex]a = 3[/tex]
apologiabiology
you would look at pemdas or order of operations
after () you would do multiplication so
a+3(5a+8)=72
first you do 3 times (5a+8) and use the distrubtive property
a+15a+24=72
so add like terms
16a+24=72
subtract 24 from both sides
16a=48
divide both sides by 16
a=3

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