16/43*17+70*17/43怎么计算?
2个回答
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解:16/43*17+70*17/43等于( 34 )
∵已知需求出16/43*17+70*17/43等于多少
X × Y + X × Z = X × (Y + Z)
∴ 16/43 * 17 + 70 * 17/43
= 16 × 1/43 × 17 + 70 × 17/43
= 16 × ( 1/43 × 17)+ 70 × 17/43
= 16 × 17/43 + 70 × 17/43
= 17/43 × ( 16 + 70)
= 17/43 × 86
= 17/43 × (2×43)/1
= 17 × 2
= 34
答:16/43*17+70*17/43等于34
∵已知需求出16/43*17+70*17/43等于多少
X × Y + X × Z = X × (Y + Z)
∴ 16/43 * 17 + 70 * 17/43
= 16 × 1/43 × 17 + 70 × 17/43
= 16 × ( 1/43 × 17)+ 70 × 17/43
= 16 × 17/43 + 70 × 17/43
= 17/43 × ( 16 + 70)
= 17/43 × 86
= 17/43 × (2×43)/1
= 17 × 2
= 34
答:16/43*17+70*17/43等于34
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