Question

2. Determine o valor de y na equação 6x - 5y = -3 para os seguintes valores de xe:
a) x= 1
b) x =
$\frac{3}{2}$
c) x = 0​

Answer 1

• a) y = $\sf{{\large \frac{9}{5}}}$

• b) y = $\sf{{\large \frac{12}{5} }}$

• c) y = $\sf{{\large \frac{3}{5} }}$

${\Large{{\boxed{\boxed{{\sf{}}}}}}}$

${\Large{{\boxed{\boxed{{\sf{}}}}}}}$

a)

6(1) - 5y = -3

6 - 5y = -3

-5y = -3 - 6

-5y = -9

• y = 9/5

$\:$

b)

$\sf{{\large 6(\frac{3}{2}) - 5y = -3 }}$

$\sf{{\large 3 \times 3 - 5y = -3 }}$

$\sf{{\large 9 - 5y = -3 }}$

$\sf{{\large - 5y = -3 - 9 }}$

$\sf{{\large - 5y = -12 }}$

• $\sf{{\large y = \frac{12}{5} }}$

$\:$

c)

6(0) - 5y = -3

0 - 5y = -3

-5y = -3 - 0

-5y = -3

• y = 3/5