Here’s one.
Matt was gifted $200 from his parents for his birthday. His friend gave him $100. How much money does Matt have now?
200+100=300
Matt has $300.
-10 + a = 6a - 7a
Rearrange the left hand side
a - 10 = 6a - 7a
Simplify 6a - 7a
a - 10 = -a
Add a on both sides
2a - 10 = 0
Add 10 on both sides
2a = 10
Divide by 2 on both sides
a = 5
Answer:
The number of messages sent by Melissa was 25
The number of messages sent by Keith was 60
The number of messages sent by Chau was 15
Step-by-step explanation:
Let
x ----> the number of messages sent by Melissa
y ----> the number of messages sent by Keith
z ----> the number of messages sent by Chau
we know that
------> equation A
----->
----> equation B
-----> equation C
substitute equation B and equation C in equation A
Solve for z
<em>Find the value of x</em>

<em>Find the value of y</em>
therefore
The number of messages sent by Melissa was 25
The number of messages sent by Keith was 60
The number of messages sent by Chau was 15
Answer:
x= -2/3y-4
Step-by-step explanation:
3x+2y=-12
3x+2y-2y= -2y-12
3x=-2y-12
3x/3= -2y/3-12/3
x= -2/3y-4