Question

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Answer 1

Explicação passo-a-passo:

a)

7z = 616

z = 88

b)

2y = 90

y = 45

c)

18w = 18

w = 1

d)

20x = 80

x = 4

Answer 2

Resposta:

Explicação passo a passo:

$\frac{a}{b} =\frac{c}{d} <=>ad=bc$

$a)$

$7z=11\:.\:56$

$z=\frac{11\:.\:56}{7}$

$z=11\:.\:8$

$z=88$

$b)$

$2y=5\:.\:18$

$2y=90$

$y=90/2$

$y=45$

$c)$

$18w=6\:.\:3$

$18w=18$

$w=18/18$

$w=1$

$d)$

$20x=10\:.\:8$

$20x=80$

$x=80/20$

$x=4$