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=-6400 - (-30)+1400
=-6370+1400
=-4970
2. 3000+ (-30) - 200×(-7)
3000+(-30)-(-1400)
2970-(-1400)
4370
3. 800-900+(-5200)÷130
800-900+(-40)
-100+-40
-140
4. (-40)×35-40×45
(-1400)-40×45
(-1400)-1800
-3200
5. 25×90+4500÷(-9)+(-16)×60
2250+4500÷(-9)+(-16)×60
2250+(-500)+(-16)×60
2250+(-500)+(-960)
1750+(-960)
790
smoga membantu
jadiin yang terbaik oksip :V