(-4)×20-(-4)×15-(-4)×62+(-4)×97
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Answer:
The answer is -160
Step-by-step explanation:
= (-4)×20 - (-4)×15 - (-4)×62 + (-4)×97
= (-4)×20 + 4×15 + 4×62 - 4×97
= -80 + 60 + 248 - 388
= -80 + 308 - 388
= -80 - 80
= -160
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