Write as a numeral 1,000+100+20+1
2 answers:
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Answer:
And we can subtract 4x in both sides and we got:
Now we can subtract in both sides 16 and we got:
And if we divide both sides by 4 we got:
And the best solution would be:
-7
Step-by-step explanation:
For this case we assume the following equation:
And we can subtract 4x in both sides and we got:
Now we can subtract in both sides 16 and we got:
And if we divide both sides by 4 we got:
And the best solution would be:
-7
Some useful relations and identities:
By the first relation, we have
Applying the two latter identities, we get
We can apply the third identity again:
and this is probably as far as you have to go, but by no means is it the only possible solution.