0
y = -2
4x - 3y = 18 (use the substitution method)
4x - 3y = 18 (substitute -2 for y, and solve for x))
4x - 3(-2) = 18
4x + 6 = 18 (subtract 6 to both sides)
4x = 12 (divide by 2 to both sides)
x = 3
Thus, (3, -2) is the solution of the given system of equations.
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How do you solve the equation 3 parentheses x plus 2 parentheses equals x minus 18?
3(x+2) = x -18 3x+6 = x -18 3x -x = -18 -6 2x = -24 x = -12
Explain how to solve x2 plus 8x -2 equals 0 by completing a square?
x2 + 8x - 2 = 0 => x2 + 8x = 2 => x2 + 8x + 16 = 2 + 16 = 18 => (x + 4)2 = 18 => x + 4 = +or- sqrt(18) = +or- 3*sqrt(2) so x = -4 +or- 3*sqrt(2)
What does x equals in 3x 12 equals 18?
3x+12 = 18 3x = 18-12 3x = 6 x = 2
Solve for x log 9 x equals 2?
log9(x)=2 x=9^2 x=81
Solve the equation 6 - 9w equals 24?
6 - 9w = 24 -9w = 18w = -2
Solve the proportion 1 over 9 equals x over 18?
1/9=x/18 18=9x 2=x
How do you solve y plus y plus 2 equals 18?
y + y + 2 = 182y + 2 = 182y = 16y = 8whew !
How do you solve 6x-4 equals 18?
6x-4 = 18 6x = 18+4 6x = 22 x = 22/6 = 3 and 2/3
How do you solve 11x equals 20x Plus 18?
11x = 20x +1811x-20x=18x(11-20)=18-9x=18x=-2
What is the degree of the polynomial 3x4 - 4x3y 6x2y2 - 8x2y3 - 7y4 2?
it's 5
How do you solve 3 x plus 2 equals x-18?
3x + 2 = x - 18 - 2 = - 2 3x = x - 20 - x = - x 2x = -20 /2 = /2 x = -10
How do you solve 2x-8 equals 10?
2x - 8 = 10 2x = 10 + 8 2x = 18 x = 18 / 2 x = 9
How do you solve 18 equals -a plus 16?
34
Solve -2 plus 5 equals?
-2 plus 5 equals +3
What equation could be used to solve yĀ² plus 7y equals 18 by factoring?
y2+7y=18 y2+7y-18=0 (y+9)(y-2)=0 y=-9 & y=2
How so solve x over 6 equals 18 over 9?
18 over 9 = 2 so x over 6 = 2 making x = 6 x 2 ie 12
What is the first step when using cross multiplication to solve the proportion 2 divided by 12 equals m divided by18?
2/12 = m/18 ie 12 x m = 2 x 18 ...
