Question

x equals 2, what does y equal ? -7x + 2y = 4

Answer 1

Answer:

x = 2

y = ?

= -7x+2y=4

= -7×2+2y=4

= -14 +2y=4

= 2y=4+14

= 2y=18

= y=18/2

= y=9

Answer 2

$Given \: x = 2 \\⇝ - 7x + 2y = 4 \\⇝ (- 7 \times 2) + 2y = 4 \\⇝ - 14 + 2y = 4 \\⇝ 2y = 4 + 14 \\⇝ 2y = 18 \\ ⇝y = \frac{18}{ 2} \\⇝ y = 9$

∴ y = 9