
(7x十x-2x)-0.5=12
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(7x十x-2x)-0.5=12
(7+1-2)x - 0.5 = 12
(8-2)x - 0.5 = 12
6x - 0.5 = 12
6x = 12+0.5
6x =12.5
x = 12.5 ÷ 6
x≈ 2.08
(7+1-2)x - 0.5 = 12
(8-2)x - 0.5 = 12
6x - 0.5 = 12
6x = 12+0.5
6x =12.5
x = 12.5 ÷ 6
x≈ 2.08
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