\(\frac{0,2x317x7+0,14x3520+33,1x14}{2+5+8+....+65-387}\)
Tính nhanh \(\frac{0,2x317x7+0,14x3520+33,1x14}{2+5+8+...+65-387}\)
Cô Loan ơi giúp em với
tính nhanh
0,2x317x7+0,14x3520+33,1x14
-----------------------------------------------
2+5+8+......+65-378
0,2x317x7+0,14x3520+33,1x14
0,2x317x7+0,14x3520+33,1x14
Tính nhanh:
0,2 x 317 x 7 + 0,14 x3520 + 33,1 x 14
_______________________________
2 + 5 + 8 ... + 65 - 387
A= 0,2.317,7+0,14.3520+33,1.14/2+5+8+...+65-387
A= 0,2.317,7+0,14.3520+33,1.14/2+5+8+...+65-387