Simplify by combining like terms.
2/8x + 3/10y - 5/8x + 4/10y
7/10x+7/8y
-3/8x+7/10y
14/18xy
4/18xy
The simplified expression is 7/10x + 7/8y.
Evaluate when a=9,b=6
a-b/3
9
1
3
6
To evaluate the expression when a = 9 and b = 6:
Substitute the values of a and b into the expression:
(9 - 6)/3
Evaluate the numerator first:
9 - 6 = 3
Then divide the numerator by the denominator:
3/3 = 1
Therefore, the value of the expression when a = 9 and b = 6 is 1.
You are saving for a skateboard. Your aunt gives you $45 to start and you save $3 each week. The expression 45+3w gives the amount of money you save after w weeks. How much will you have saved after 4 weeks?
$576
$42
$33
$57
To find the amount of money you will have saved after 4 weeks, substitute w = 4 into the expression 45 + 3w:
45 + 3(4) = 45 + 12 = 57
Therefore, you will have saved $57 after 4 weeks.
To simplify the expression 2/8x + 3/10y - 5/8x + 4/10y, you need to combine like terms.
First, let's combine the x terms: 2/8x - 5/8x. Since these terms have the same variable (x) and the same denominator (8), we can combine them by subtracting their coefficients:
2/8x - 5/8x = (2 - 5)/8x = -3/8x.
Next, let's combine the y terms: 3/10y + 4/10y. Just like before, these terms have the same variable (y) and the same denominator (10), so we can combine them by adding their coefficients:
3/10y + 4/10y = (3 + 4)/10y = 7/10y.
Now, we can put the simplified x and y terms together to get the final simplified expression:
-3/8x + 7/10y.
Therefore, the simplified expression is -3/8x + 7/10y.
To simplify the expression by combining like terms, you need to add or subtract the terms that have the same variables raised to the same power.
Given the expression: 2/8x + 3/10y - 5/8x + 4/10y
First, let's group the like terms together:
(2/8x - 5/8x) + (3/10y + 4/10y)
Now, combine the like terms within each group:
(2/8 - 5/8)x + (3/10 + 4/10)y
Simplifying further, we have:
(-3/8)x + (7/10)y
Therefore, the simplified expression is:
-3/8x + 7/10y