Answer:
1,260
Step-by-step explanation:
I know I'm right for sure
Answer:
Substitute
Step-by-step explanation:
Example
y=3
11+y=2x
The first thing you should do is put 3 in place of y in the second equation.
11+3=2x
14/2=2x/2
x=7
Answer: 
Step-by-step explanation:
Given
Equation is 
Mila uses the first step as multiplication to make the coefficient of x, 1
Mila maybe have multiplied the whole equation by 2 i.e.
Answer:
275
Step-by-step explanation:
Cross multiply
36% of the boys = 99
100% of the boys = x
36/100 = 99/x ===> 36x = 99*100 ===> 36x = 9900 ===> x = 9900/36 ===>
x = 275 boys
3(2x + 6)
using the distributive property
= 3 * 2x + 3 * 6
= 6x + 18
Answer: 6x + 18
[ ? ] = 18
