When you don’t have parenthesis, you just add like terms(terms with the same variable(s))

so in this case, 9+8-7 = 10 now just ad in the AB, and you get 10ab

!!WHAT YOU DID IS NOT DIST. PROPERTY!!!

if you did have parenthesis, then it would go a bit differently…

ie. 9ab (8ab + 7ab)

here you have to multiply all the terms in the parenthesis by the term outside (9ab)

so here, you would get…

(9ab x 8ab) + (9ab + 7ab)

after you multiple, you should get this:

(72ab) + (63ab)

and after some simple addition, you get 135ab

What i just explained is distributive property. dont confuse it with adding like terms.

Hope i helped!!

As long as the “ab” is the variable for each, you just add. Unless you meant the problem as 9ab+8ab-7ab. Then your answer would be correct.

You combine like terms. So just add 9ab+8ab+7ab because they all are being multiplied by a and b.

The answer would be 24ab.

think you desire to calculate 5 circumstances (3 + 4) . This actually capacity: upload 3 and four mutually and multiply that answer circumstances 5. so which you get 5 circumstances 7 or 35. The distributive belongings says you’re able to do it yet differently: take 5 time 3 and 5 circumstances 4 and upload those solutions: you get 15 + 20 = 35. same answer. same thought if there’s a minus sign. 5 circumstances (6 – 2) is the sames as 5 circumstances 4 or 20, because of the fact 6-2 equals 4, even though it could additionally be calculated as 5 circumstances 6, minus 5 circumstances 2, it incredibly is 30 – 10 or 20. same answer. So, in the subject you asked approximately, shall we seem first at 5 circumstances (x-6) that’s written 5(x-6). with the aid of the distributive belongings this equals 5 circumstances x, minus 5 circumstances 6. In symbols: 5(x-6) = 5x – 30. Now we are in a position to do your complete concern: 5(x-6)+7x = 5x – 30 + 7x = 12x – 30. it incredibly is it!

You add 9ab+8ab+7ab which equals 24ab.

when there are no parenthesis you are probably supposed to see if anything can be factored out of the equation, or see what si common in all of the terms. In this each part has an ab in it so that can be taken out making it look like: ab(9+8+7) or ab(23).