The answer is -60. this is because the signs implemented in front of numbers give it a sort pattern .
when there are two additions the last number after the positive sign will give a positive number 1 greater than the initial number for example + 5 + 6. Answer afterward will be + 7 and for negative sign eg: - 7 - 8 in the question will give the answer -8 the same number after a negative (-) sign .
Hope this helps
Answer:
49
Step-by-step explanation:
6238 -6287
=49
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I'm here buddy,
so, let's take the value of the two bags with equal weight as x.
= x + x + (x +
) = 
= 3x +
= 
= 3x =
- 
( let's take the LCM of 4 and 5 = 20
= 3x =
- 
= 3x = 
= x =
÷
=
×
= 
So, the weight of the equal bags are
and the weight of the third bag ( heavy one ) is
+
=
+
= 
1st bag =
kg
2nd bag =
kg
3rd bag =
kg
Hope it helps...