题目内容
【题目】当y=1.3时,求3(y+5.6)的值.
【答案】解:当y=1.3时,
3(y+5.6),
=3×(1.3+5.6),
=3×6.9,
=20.7.
【解析】把y=1.3代入含字母的式子3(y+5.6)中,计算求值即可求得答案.
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题目内容
【题目】当y=1.3时,求3(y+5.6)的值.
【答案】解:当y=1.3时,
3(y+5.6),
=3×(1.3+5.6),
=3×6.9,
=20.7.
【解析】把y=1.3代入含字母的式子3(y+5.6)中,计算求值即可求得答案.