方程.9.3x +5.7x =4.5
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方程.9.3x +5.7x =4.5
方程.9.3x +5.7x =4.5
方程.9.3x +5.7x =4.5
9.3x +5.7x =4.5
(9.3+5.7)x=4.5
15x=4.5
x=4.5÷15
x=0.3
方程.9.3x +5.7x =4.5
方程.9.3x +5.7x =4.5
方程.9.3x +5.7x =4.5
9.3x +5.7x =4.5
(9.3+5.7)x=4.5
15x=4.5
x=4.5÷15
x=0.3