  Question

# Find the value of : a)   -392+ (-5)+ (-8)+ (-15) b)  -137 + 854 —84+ 506 c)  subtract  (-89) from (-54) d)  389+ (54) —774+ (-39)

Solution

## a)the number given are full negative and we can take - as common oustside so we can write -(392+5+8+15)=-420        ##if we multiply that - inside the bracket it again changes to -392+-5+-8+-15 so both are correct..## b)group the negative and positive numbers togetherness for easiness -137-84+854+506 take the common negative from first tow numbers and simply add the last two numbers -(137+84)+1360 now add the numbers inside the bracket -(221)+1360 now 1360 is larger than 221...so now subtract 221 from 1360 ie.1360-221=1139 c)so we need to subtract -89 for -54 ie-54- (-89)        we know - multipiled by - is +  so question becomes -54+89  so 89 is greater than 54 so subtarct 54 from 89  so 89-54=35 therefore subtracting -89 from -54 is same as subtarcting 89 from -54 d)this question si same as 389+54-774-39    as we know - multiplied by + is - so here we add 1st two numbers and from the last two numbers we take the - as common outside ie.389+54-(774+39) =443-(774+39) now we add the terms inside the bracket =443-813 so 813 is greater than 443 so here we subtarct 443 from 813 and will put a negative sign along with the answer so it will be -(813-443)=-370  Suggest corrections   