А) x ÷ (—2,3) = —5,8 ÷ (—4,6)
x × (—4,6) = —2,3 × (—5,8)
—4,6x = 13,34
x = —
= —2,9
б) —2,8 ÷ 35 = —4,2 ÷ x
—2,8 × x = —4,2 × 35
—2,8x = —147
x =
= 52,5
в) —
÷ x =
÷ (—
)
—
× (—
) = x ×
×
=
=
x =
÷
=
×
=
=
=
= 3,75<span>
г) —</span>
÷
= x ÷
—
=
—
= <span>
—</span>
= <span>
x = </span>
÷ (—
) = <span>
</span>×<span> (—
) = —</span>
= —
= —0,625
V=a×b×c
v= 2.4×6×8.2 =118.08 см^3