8x+19=51解方程 验算

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8X=51-19
8X=32
X=32/8
X=4
验算：将X=4代入
8*4+19=51

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8x+19=51
8x=51-19
8x=32
x=4
验算: 左边=8×4+19=32+19=51=右边

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