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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
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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).
How do you write 7y 46 in algebraic expression?
It is simply: 7y+46 or 7y-46
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.
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
