(5.8-1.5)*0.8=3x-1.4

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(5.8-1.5)*0.8=3x-1.4
(5.8-1.5)*0.8=3x-1.4

(5.8-1.5)*0.8=3x-1.4
(5.8-1.5)*0.8=3x-1.4
3x=4.3x0.8=1.4
3x=34.4-1.4
3x=33
x=11