(x÷5×4-40)-40%x=32
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(x÷5×4-40)-40%x=32(x÷5×4-40)-40%x=32(x÷5×4-40)-40%x=32(x÷5×4-40)-40%x=320.8x-40-0.4x=320.4x=72x=72÷0
(x÷5×4-40)-40%x=32
(x÷5×4-40)-40%x=32
(x÷5×4-40)-40%x=32
(x÷5×4-40)-40%x=32
0.8x-40-0.4x=32
0.4x=72
x=72÷0.4
x=180
根据同级原则可得
(0.8x-40)-0.4x=32
0.4x=32+40=72
x=180