5X-3乘以点5=6点5
5x-1.5=6.5
5x=6.5+1.5
5x=8
x=8÷5
x=1.6
5X-3乘以点5=6点5
5x-4.5=6.5
5x=6.5＋4.5
5x=11
x=2.2
5X-3×1.5=6.5
5x－4.5=6.5
5x=6.5＋4.5
5x=11
x=2.2
5x-3*0.5=6.5
5x =8
x =1.6
5x-3=6.5除以0.5
5x-3=13
5x=13+3
5x=16
x=16除以5
x=3.2
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