1)139*15+18*139+15*261+18*261= 2)125*48-31*82-31*43+125*83= 3)14,7*13-2*14,7+13*5,3-2*5,3=

Question

1)139*15+18*139+15*261+18*261=
2)125*48-31*82-31*43+125*83=
3)14,7*13-2*14,7+13*5,3-2*5,3=

Answer 1

139*15 + 18 *139 + 15 * 261 + 18 * 261 = 13200
 
2) 12500

3) 220

Comments

2)18 * 139 = 2502

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3)15 * 261 = 3915

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4)18 * 261 = 4698

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5) 2085+2502+ 3915+4698 = 13200

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125*48-31*82-31*43+125*83=12500  

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1)125 *48 = 6000

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2)31*82 = 2542

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3)31*43=1333

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4)125*83=10.375

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5) 6000-2542-1333+10375 = 12500

Answer 2

1) 13,200
2)3,2831
3)220