Page 52 - aljaber

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:( ) ()
()
.1×2×3×4 = 1 ()
()
2345 5
()
:( )
()
. 4 +  130 × 1  = 4 + 3 = 40 + 3 = 43 ()
5 5 5 50 50 50

:( )

. 1 + 1 = 1 ×  10 + 9  = 19
9 2 10 2 90 180

:( )

.1 + 1 +1 = 3+4+2 = 9 = 3

4 3 6 12 12 4

.1− 3 = 1

44

:( )

. 6 × 3 × 1 6 × 3 ×1 18 9 4
2 2 2
= = = = 9× = 12
3 3 33 3

4 4 44

:( )

. 2 × 30 = 2 × 6 = 12

5

:( )

. 9 ×2 = 2 = 1

10 9 10 5