展开 12x+3(2x-4=60)

解答

展开

12 x + 3 (2 x - 4 = 60)

18 x - 12 = 60

求解步骤

12 x + 3 (2 x - 4 = 60)

= 12 x + 3 (2 x - 4 \cdot 60 =)

乘开

3 (2 x - 4 = 60) : 6 x - 12 = 60

12 x + 6 x - 12 = 60

乘开

12 x + 6 x - 12 : 18 x - 12

18 x - 12 = 60

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