Substitute the values for the letters and work it out, remembering that if a number is next to a letter it means multiply:
x = 5, y = -1
6x - 3y = (6 × 5) - (3 × -1)
= 30 - -3
= 30 + 3
= 33
If you mean: 6x-3y = -33 and 2x+y = -1 Then solving the simultaneous equations by substitution: x = -3 and y = 5
0.3x - 0.2y = 4 (or you can multiply by 10 in order to work with whole numbers) 0.2x - 0.3y = 5/23 3x - 2y = 40 2x -3y = 50/23 2(3x) - 2(2y)= 2(40) -3(2x) - (-3)(3y) = (-3)(50/23) 6x - 4y = 80 -6x +9y = -150/23 6x - 6x - 4y + 9y = 80 - 150/23 5y = 1690/23 y = (1690/23)/(5) y = (1690/23)(1/5) y = 338/23 2x - 3y = 50/23 2(338/23) - 3y = 50/23 676/23 -3y = 50/23 -3y = -676/23 + 60/23 -3y = -616/23 y = (-616/23)/(-3) y = (-616/23)(-1/3) y = 616/69
1
y = 8
If: 6x-4+7 = 5 Then: x = 1/3
6x - 3y - 1 = 5Subtract 6x from each side:-3y - 1 = -6x + 5Add 1 to each side:-3y = -6x + 6Divide each side by -3 :y = 2x - 2Draw a straight line, with a slope of 2, through the point [ y = -2 ] on the y-axis.
y=(6x-5)/3
-6x = 6y + 6 -6x = 3y - 12 Subtracting the second from the first gives: -6x - -6x = 6y - 3y + 6 - -12 → 0 = 3y + 18 → 3y = -18 → y = -6 Substituting in the first: -6x = 6y + 6 → -6x = 6(-6) + 6 → -6x = -36 + 6 → -6x = -30 → x = 5 Thus x = 5, y = -3 solve the simultaneous equations.
6x - 3y = 6 y= 2x + 5 replace 2x + 5 for y into the first equation 6x - 3y = 6 6x - 3(2x + 5) = 6 6x - 6x - 15 = 6 0 - 15 = 6 -15 = 6 False So the system has no solution.
If you mean: 6x-3y = -33 and 2x+y = -1 Then solving the simultaneous equations by substitution: x = -3 and y = 5
Unfortunately, limitations of the browser used by WA means that we cannot see most symbols. Assuming the original equation was 3y - 6x = 15 the slope intercept form is 3y = 6x + 15 which can be simplified to y = 2x + 5
The value of X in the equation 2x-1-6 5 plus 6x is -3.
To find the value of (3y^2 + 2) when (y = -1), substitute (-1) for (y): [ 3(-1)^2 + 2 = 3(1) + 2 = 3 + 2 = 5. ] Thus, the value is (5).
6x - 1 = 29 => 6x = 30 => x = 5 Then x2 + x = 25 + 5 = 30
4x + 3y = 1 y=2x-8 Substitute the known y value into the first equation to clear the variable. 4x + 3(2x-8)=1 Once the Y is cleared, it just becomes elementary algebra. First multiply out the three. 4x + 6x - 24=1 Then Clear the negative 24 by adding it to both sides. 4x + 6x = 25 Combine like terms 10x = 25 and divide by 10 to get the value of x. X = 2.5 Now that you know your X value, substitute that back into the either equation to get Y Y=2(2.5) - 8 Y=5-8 Y=-3 or 1=3y + 4(2.5) 1= 3y + 10 -9=3y y=-3
x = -3y = -14
That depends on what you mean by "6x 5", which could be 6x * 5, 6x + 5, 6x - 5, 6x / 5, 6x5, etc.