Question

18. If 2x+4=12, then 5x is equal to :​

Answer 1

Answer:

$2x + 4 = 12 \\ \\ 2x = 12 - 4 \\ \\ 2x = 8 \\ \\ 2x = 8 \\ \\ x = \frac{8}{2} \\ \\ x = 4$

x = 4

➼5x=5×4= 20

Answer 2

Answer:

2x + 4 = 12

2x = 12 - 4

2x = 8

x = 8 ÷ 2

x = 4

Verification:

LHS = 2x + 4

= 2 × 4 + 4

= 8 + 4

= 12

RHS = 12

LHS = RHS hence, verified.

So, the value of 5x = 5 × 4

= 20

Hope it helps