-4x(-7)
32-24-_+19=24
5a^2b/a^4
100% of 90
1 +1
(-5+1):8+8.5-32-(-1)-12:22 +5 =
13+9-15+23
\frac{0.5\cdot\sqrt{2.1,8.10}\ +2x}{\left(0.6\right)}=\frac{x+\left(-2\right)^{3}}{\frac{3}{5}}
x + 2 + 0
(a^-3/b)^-2