Question

ayuda por favor doy Corona ​

Answer 1

1.

$3 + x = 8$

$20 - x = 7$

$\frac{3x}{5} + \frac{x}{4}$

$x - (x - 1)$

$2n + 3 (2(n + 1))$

2.

$\frac{x}{2} + 8$

$2x - \frac{x}{2}$

$3x + 4$

${a}^{2} + {b}^{2}$

${2x}^{2} - 6$

3. la base es el doble de la altura

$b = 2h$

$b - 5 = h$

$h = \frac{2}{5} b$

$a \times b = 75 \: {cm}^{2}$

$b - h = 3$