Question

ayuudaaaaaaa rapido porfa

Answer 1

Respuesta:

$3(x - 1) - 2(x + 3) = 0 \\ 3x - 3 - 2x + 6 = 0 \\ 3x - 2x = 0 + 3 + 6 \\ x = 9$

Explicación paso a paso:

b.

$7(w + 20) - w = 5 \\ 7w + 140 - w = 5 \\ 7w - w = 5 - 140 \\ 6w = - 135 \\ w = - 135 \div 6 \\ w = - 22.5$

c.

$9(x - 2) = 3x + 3 \\ 9x - 18 = 3x + 3 \\ 9x - 3x = 3 + 18 \\ 6x = 21 \\ x = 21 \div 6 \\ x = 3.5$

d.

$2(5a - \frac{1}{3} ) = \frac{2}{7} \\ \\ 10a - \frac{2}{3} = \frac{2}{7} \\ 10a = \frac{2}{7} + \frac{2}{3} \\ 10a = \frac{20}{21} \\a = \frac{20}{21} \div \frac{1}{10} \\ a = \frac{200}{21}$

e.

$\frac{2}{9} (i + \frac{2}{3} ) = \frac{2}{5} \\ \frac{2i}{9} + \frac{4}{27} = \frac{2}{5} \\ \frac{2i}{9} = \frac{2}{5} - \frac{4}{27} \\ \frac{2i}{9} = \frac{34}{135} \\ 2i = \frac{34}{135} \times 9 \\ 2i = \frac{306}{135} \\ 2i = \frac{34}{15} \\ i = \frac{34}{15} \div \frac{1}{2} \\ i = \frac{68}{15}$

f.

$4(v + \frac{1}{4} ) = \frac{35}{2} \\ 4v + \frac{4}{4} = \frac{35}{2} \\ 4v + 1 = \frac{35}{2} \\ 4v = \frac{35}{2} - 1 \\ 4v = \frac{33}{2} \\ v = \frac{33}{4} \div \frac{1}{4} \\ v = \frac{132}{4} = 33$

g.

$\frac{s - 4}{11} = \frac{2}{5} \\ s - 4 = \frac{2}{5} \times 11 \\ s - 4 = \frac{22}{5} \\ s = \frac{22}{5} + 4 \\ s = \frac{42}{5}$

h.

$\frac{p}{10} - \frac{2p}{3} = \frac{1}{9} \\ \frac{3p - 12p}{30} = \frac{1}{9} \\ \frac{ - 9p}{30} = \frac{1}{9} \\ - 9p = \frac{1}{9} \times 30 \\ - 9p = \frac{30}{9} \\ p = \frac{30}{9} + 9 \\ p = \frac{110}{9}$