Question

Pfvvv se puderem me ajudarr agradeçoo 

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Answer 1

a)

$(- \frac{1}{2} ) ^{2} .( \frac{3}{2} )-( \frac{2}{3}) ^{3} :(- \frac{1}{27} )=$

$\frac{1}{4} .( \frac{3}{2} )-( \frac{8}{27}).(- \frac{27}{1} =$

$\frac{3}{8} -(-8)=$

$\frac{3}{8} +8= \frac{3+64}{8} = \frac{67}{8}$

b)
$( \frac{1}{10} ) ^{2} :(-2)+( \frac{15}{10} ).(- \frac{1}{10} ) ^{2} =$

$\frac{1}{100}.(- \frac{1}{2} ) +( \frac{15}{10}) .(\frac{1}{100} )=$

simplifica 15 com 10

$- \frac{1}{200} +( \frac{3}{2} ). (\frac{1}{100} )=$

$- \frac{1}{200} + \frac{3}{200} = \frac{2}{200} = \frac{1}{100} =0,01$

4)
a)
$4-2x=x+31$

$-3x=27$

$3x=-27$

$x=- \frac{27}{3}$

x=-9

S={-9}

b)
$5-2(y-1)=y+4(-2+3y)$

$5-2y+2=y-8+12$

$-15y=-15$

$15y=15$

y=1

S={1}