0.3x×7+4x=37.21怎样解

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0.3x×7+4x=37.21怎样解0.3x×7+4x=37.21怎样解0.3x×7+4x=37.21怎样解2.1x+4x=37.216.1x=37.21x=37.21÷6.1x=6.1原式=2.1x

0.3x×7+4x=37.21怎样解
0.3x×7+4x=37.21怎样解

0.3x×7+4x=37.21怎样解
2.1x+4x=37.21
6.1x=37.21
x=37.21÷6.1
x=6.1

原式=2.1x+4x=37.21 整理得6.1x=37.21 解得x=6.1

0.3x×7+4x=37.21
6.1x=37.21
x=6.1

6.1x =37.21 x=6.1

原式=2.1x+4x=37.21
=6.1x=37.21
x=6.1