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How to do this question?​
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2 Answers

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Step-by-step explanation:

We know that,

( + ) × ( + ) = ( + )

( - ) × ( - ) = ( + )

( + ) × ( - ) = ( - )

By keeping the above in mind let us solve this.

200 + ( -55 ) + ( -77) + ( - 68 )

200 - 55 - 77 - 68

145 - 77 - 68

68 - 68

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STEP BY STEP

200+[-55]+[-77]+ [-68]

200+[-55-77-68]

200+[-200]

200 -200

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PLEASE PLEASE MAKE ME THE BRAINLIST
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