Answer:
-4
Step-by-step explanation:
Answer:11
Step-by-step explanation:
Answer:
Step-by-step explanation:
5a. 7 < x
b. 2< 2x
c. 8 > x
d. 3 > x/29
joe = j
christina = c
Aaron = a
j = 3a , c = a-6 total ages is 149
149 = j + c+ a
149 = 3a + a-6 + a
149 = 5a-6
add 6 to both sides
149 + 6 = 5a-6+6
155 = 5a
a = 155/5
a = 31
c = a - 6
c = 31 - 6
c = 25
Answer:
Sum: 17 + 11 = 28
Difference: 17 - 11 = 6
Step-by-step explanation:
The sum of x and y is 28. In other words, x plus y equals 28 and can be written as equation A:
x + y = 28
The difference between x and y is 6. In other words, x minus y equals 6 and can be written as equation B:
x - y = 6
Now solve equation B for x to get the revised equation B:
x - y = 6
x = 6 + y
Then substitute x in equation A from the revised equation B and then solve for y:
x + y = 28
6 + y + y = 28
6 + 2y = 28
2y = 22
y = 11
Now we know y is 11. Which means that we can substitute y for 11 in equation A and solve for x:
x + y = 28
x + 11 = 28
X = 17
Summary: The sum of two numbers is 28 and their difference is 6. What are the two numbers? Answer: 17 and 11 as proven here:
Sum: 17 + 11 = 28
Difference: 17 - 11 = 6
