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Explain how solving -7y > 161 is different from solving 7y > -161?
Gabby Carlson
Sample response: Both inequalities use the division property to isolate the variable, y. When you divide by a negative number, like –7, you must reverse the direction of the inequality sign. When you divide by a positive number, like 7, the inequality sign stays the same. The solution to the first inequality is y > -23, and the solution to the second inequality is y
Gabby Carlson
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What is 39-7y equals 18 equal?
39 - 7y = 18,-7y = 18 - 39-7y = -21-7y/-7 = -21/-7y = 3
7y-2 equals 14yplus 61?
y=-9 7y-2=14y+61 7y-2-7y=14y+61-7y -2=7y+61 -2-61=7y+61-61 -63=7y -63/7=7y/7 -9=y
What is 16 plus 7y - 8?
16+7y-8 = 7y+16-8 = 7y+8
What is a plus 7y?
a + 7y
What is the equivlent expression of 7y x 7y x 7y?
343y3
How do you use the elimination method using x and y?
Let's explain with an example: 2x - 7y = 11 5x + 7y = 3 To solve this system of equations by elimination we "add" the second equation to the first equation. So basically: 2x + 5x - 7y + 7y = 11 + 3 Which then symplifies to: 7x = 14 and x = 2 Then plug x = 2 into the original equation: 5(2) + 7y = 3 Which leads to: y = -1 So the solution is (2,-1).
What is the solution of 3x plus 7y-c equals?
Solving equations in two unknowns requires two independent equations. Since you have only one equation there is no solution.
How do you write 7y 46 in algebraic expression?
It is simply: 7y+46 or 7y-46
Use elimination to solve the system x plus 7y equals 16 and 3x - 7y equals 4?
x+7y=16 ---------------------------1 3x- 7y=4 ---------------------------2 ------------------------------------------------------------------------------------------------------------------ 1+2 x+7y=16 3x-7y=4 4x=20 x=5 substitute x = 5 in x+7y=16 (5)+7y=16 7y=11 y=11/7
What is 4y-7y?
4y-7y = -3
How do you write 7y 2y in its simplest form?
7y + 2y = 9y 7y * 2y = 14y^2
7y plus 4-4-9 simplified?
7y + 4 - 4 - 9 = 7y - 9
