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1)7*(13-8) ; 2)5*(22-14) 3)(42-24)*15 4)10*(15-6) 5)5*(18-3) 6)(9-3)*12 7)(91-1)*7
1)7*(13-8) ; 2)5*(22-14) 3)(42-24)*15 4)10*(15-6) 5)5*(18-3) 6)(9-3)*12 7)(91-1)*7
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Answers & Comments
2. 5×(22-14)=110-70=40
3. (42-24)×15=630-360=270
4. 10×(15-6)=150 -60=90
5. 5×(18-3)=90-15=75
6. (9-3)×12=108-36=72
7. (91-1)×7=637-7=630