x (м) ткани пошло на взрослое пальто
y (м) ткани пошло на детское пальто
составис систему уравнений по условию задачи
\left \{ {{x=1,75y} \atop {60*1,75y+35y=224}} \right.<=>\left \{ {{x=1,75y} \atop {105y+35y=224}} \right.<=>\\\ \\\ <=>\left \{ {{x=1,75y} \atop {140y=224}} \right.<=>\left \{ {{x=1,75y} \atop {y=224:140}} \right.<=>\left \{ {{x=1,75y} \atop {y=1,6}} \right.<=>\left \{ {{x=2,8} \atop {y=1,6}} \right. " alt="\left \{ {{4x=7y} \atop {60x+35y=224}} \right.<=>\left \{ {{x=1,75y} \atop {60*1,75y+35y=224}} \right.<=>\left \{ {{x=1,75y} \atop {105y+35y=224}} \right.<=>\\\ \\\ <=>\left \{ {{x=1,75y} \atop {140y=224}} \right.<=>\left \{ {{x=1,75y} \atop {y=224:140}} \right.<=>\left \{ {{x=1,75y} \atop {y=1,6}} \right.<=>\left \{ {{x=2,8} \atop {y=1,6}} \right. " align="absmiddle" class="latex-formula">
x=2,8 x (м) ткани пошло на взрослое пальто