I believe the answer is this but am not sure:

49+6-3(71*21)/15+7^3

Parenthesis:  71*21=1491

49+6-3*1491/15+7^3

Exponent: 7^3=343

49+6-3*1491/15+343

Multiply: 3*1491=4473

49+6-4473/15+343

Divide: 4473/15=298.2

49+6-298.2+343

Add: 49+6=55, 298.2+343=641.2

55-641.2

Subtract: 55-641.2=-586.2

Final Answer: -586.2

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1 Answer

add and subtract left to right:

49+6-298.2+343

=55-298.2+343

=(-243.2)+343

= 99.8
by Level 5 User (11.9k points)

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