4(m+3) =10m-6
4m +12= 10m-6 Expanded the brackets
12= 6m -6 took away 4m from both sides
18=6m added 6 to both sides
m=3 divided both sides by 6
Answer:
(-5,-3)
Step-by-step explanation:
In this case to find the solution you could use substitution. This way you can solve without changing the equation over again.
(b - 2) - 3b = 4
b - 2 - 3b = 4
-2b - 2 = 4
-2b = 6
b = -3
Plug back in to find value a
a = (-3) - 2
a = -5
Check your answer before submitting
(-5) - 3(-3) = 4
-5 + 9 = 4
4 = 4
Hope this helps
The answer is I don’t have to your lungs or anything else you can tell them that I
If he has 9 rows of equal length there are 3 chairs left over.
If he has 7 rows of same length there are 19 left over.
It's important to note that these two setups have the same number of chairs. So we can make an equation out of it.
9x + 3 = 7x +19
2x + 3 = 19
2x = 16
x = 8
So, x (8) is the number of chairs in each row with these setups.
Plug 8 into one of the equations and you will find how many chairs total there are.
9(8) + 3 = 75
There are 75 chairs total
The answer is 63.3
9.5 * 3 + 8.7 * 4 = 63.3
