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7,3 × 12 = 87,6
jadi 87, 6 - 61 = x
x = 26,6
6 x 5 = 30
7 x 6 = 42
8 x x =8x
9 x 3 =27
10 x 1 =10
mean = 5+30+42+8x+27+10 = 114+8x
1+5+6+x+3+1 16+x
7,3 = 114+8x
1 16+x
7,3(16+x ) = 1(114+8x)
116,8 + 7,3x = 114 + 8x
116,8 - 114 = 8x - 7,3x
2,8 = 0,7x
x = 2,8
0,7
= 4