(2х-5)•0,7-(-0,4х+2,5)=1,8х-6.
1,4x - 3,5 + 0,4x - 2,5 = 1,8x - 6
1,8x - 6 = 1,8x - 6
( x =>любой номер)
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(2х-5)•0,7-(-0,4х+2,5)=1,8х-6.
1,4x - 3,5 + 0,4x - 2,5 = 1,8x - 6
1,8x - 6 = 1,8x - 6
( x =>любой номер)