<span>1) -1,2</span>×<span>3а = - 3,6a
2) -0,8х </span>× <span>(-0.7) = 0,56x
3) -5b</span>×<span>2,4с = - 12bc
4) -6а</span>×<span>0,7b</span>×<span>(-0,5с) = -4,2ab </span>× (-0,5c) = 2,1abc<span>
5) -</span>⁴<span>/</span>₁₅<span>х </span>×<span> </span>⁵<span>/</span>₁₆<span> </span>×<span> (-у) = - </span>⁴ˣ⁵/₁₅ₓ₁₆x × (-y) = - ¹/₁₂x × (-y) = ¹/₁₂xy<span>
6) 1</span>³<span>/</span>₅<span>х </span>× <span>(-</span>¹⁵<span>/</span>₃₂<span>у) = </span>⁸/₅x × (-¹⁵/₃₂y) = - ⁸ˣ¹⁵/₅ₓ₃₂xy = ³/₄xy = 0,75xy
4*3/3= 4
ответ :4
это правельно у нас точно такая же задача