5/(2y) + 3 + 6/y + 2 = 3
1. Bring all the unknown (all terms containing a letter, here Y) to one side and known to the other
5/(2y) + 6/y = 3 + (-3) + (-2)
2. multiply all by 2, to get rid of it where it stands next to the y
(2*5)/(2y) + (2*6)/y = 2*(-2)
3. Multiply all :)
5/y + 12/y = -4
4. add all the terms with unknows
17/y = -4
5. Therefore, y=17/(-4)
and y=-4.25
To check, just substitute y=-4.25 into the starting equation 5/(2y) + 3 + 6/y + 2 = 3
Another method with the same result:
5/2y + 3 + 6/y + 2 = 3
5/2y + 6/y = 3 -3 -2
5/2y + 6/y = -2
Multiply all terms by 2y in ordes to eliminate the fractions:
5 + 12 = -4y
17 = -4y
Divide both sides by -4 to find the value of y:
y = -4.25
Check by substituting the value of y into the original equation which will work out as: 3 = 3
many solutions
4y+2 = 2y+6 4y-2y = 6-2 2y = 4 y = 2
2y + 4 = 3ySubtract 2y from both sides:4 = ywhew
3x+2y=6 2y=-3x+6 y=-1.5x+3
Subtract by 7x and divide by 2.
2y = 4x + 4y = 2x + 2
you can not solve this equation
many solutions
4y+2 = 2y+6 4y-2y = 6-2 2y = 4 y = 2
2y + 4 = 3ySubtract 2y from both sides:4 = ywhew
3x + 2y = 12 ie 2y = 12 - 3x so y = 6 - 3x/2
3x+2y=6 2y=-3x+6 y=-1.5x+3
Subtract by 7x and divide by 2.
6x+2y=4 gives y=2-(1/3)x
3y + 2y + 4 + 1 = 805y + 5 = 805y = 75y = 15
Can you help with this equation? Thanks. Solve for x and y and z for the following. x plus y plus z equals 9 x plus 2y plus 3z equals 23 x plus 5y plus -3z equals -7
You cannot solve one linear equation in two unknown variables.