Question

(-243) + (-52) + (-57) = (-243 + --------) + (-52)

Answer 1

Answer:

-57

Step-by-step explanation:

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Answer 2

Answer:

-57

Step-by-step explanation:

let the required no. be x

-243+(-52)+(-57)=(-243+x)+(-52)

-243-52-57=(-243+x)-52

-243-52-57+52=-243+x

-52 and +52 gets cancelled

-243-57+243=x

-243 and +243 gets cancelled

therefore

x=-57

that is the required no. is -57