evaluate each of the following: a, 1-2+3-4+5-6+_ , b, 3+(-3)+3+(-3)+_ (a) if the sum of terms is 16 (b) if the sum of terms is 17
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DUHA1:
it is a correct question with correct words and grammer, I have copied it from my math book
and if u can help me with rhis plz do
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Answered by
1
Can u say Is this normal adding or it should use with the help of some identities or formulas??
and, no normal adding
what class are u in?
???
I've also posted a pic along with my question
I'm grade 9th
wht abt you??
I'm in 7th
did u check the pic I have posted
yea i have seen....
so...... isn't that ok?
Answered by
0
Answer:
i)
a)-8
b)9
ii)
a)0
b)-3
Step-by-step explanation:
i)
a)1-2+3-4+5-6+7-8+9-10+11-12+13-14+15-16=-8
b)1-2+3-4+5-6+7-8+9-10+11-12+13-14+15-16+17=9
ii)
a)3-2+3-3+3-3+3-3+3-3+3-3+3-3+3-3=0
b)3-2+3-3+3-3+3-3+3-3+3-3+3-3+3-3+3=3
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