If x + 5 = y, then 2x + 10 =?

2x + 10 = 2(x + 5) = 2y

OPTIION c.

Value of x:
x + 5 = y
x = y - 5

Then (substitute x in the 2nd equation):
= 2x + 10
= 2(y - 5) + 10
= 2y - 10 + 10
= 2y

Answer: c. 2y

2y is the anwser. option c

∵ x + 5 = y
∴ 2x + 10 = 2y
(answer c)

ans:c
2y

x+5=y
=>x=y-5.....(1)
substituting in given eqn
we get,
2(y-5)+10
=2y-10+10
=2y

answer is 2y

x + 5 = y
x = (y -5)

2x + 10 =
2(y - 5) + 10 =

2y - 10 + 10 = 2y

it answer is C. because it have being multiple twice.

Easy question. C

You can use visual inspection to see the second is twice that of the first so 2x + 10 = 2y. You can also use substitution if the new equation is not a multiple.

Since x + 5 = y, x = y - 5
2x + 10 = 2(y-5) + 10 = 2y -10 + 10 = 2y

c. 2y

multiply both sides of the equation by 2..............