Question

If 5x+6=10, what is the value of 10x+3?

A) 4
B) 9
C) 11
D) 20

Answer 1

$5x+6=10$
$5x=10-6$
$5x=4$
$x=4/5$

If we substitute the value of x into the second equation

$10x+3$
$10\times 4/5+3$
$8+3=11$
Therefore, your solution is 11

Answer 2

Answer: 11

Step by step explanation:

Step 1 : solve the first equation to find the value of x

5x + 6 = 10

5x = 10 – 6

5x = 4

X = 4/5

Step 2 : Substitute the value of x in the second equation

10x + 3 = ?

10 ( 4/5) + 3  

= 40 / 5 + 3

= 40 + 15 /5

= 55 / 5

= 11