2X加上2.4乘以3等于(2加0.1X)乘以4

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2X加上2.4乘以3等于(2加0.1X)乘以4
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2X加上2.4乘以3等于(2加0.1X)乘以4
2X加上2.4乘以3等于(2加0.1X)乘以4

2X加上2.4乘以3等于(2加0.1X)乘以4

答案是x=0.7

2x+2.4×3=(2+0.1)×4
2x-0.4x=8-7.2
1.6x=0.8
x=0.5