4y + 3 = 7y - 18
Add 18 to each side of the equation:
4y + 21 = 7y
Subtract 4y from each side:
21 = 3y
Divide each side by 3:
7 = y
How do you solve 4y plus x equals 8
x = 4 and y = 0
y = 31
You cannot solve one equation in two unknowns.
4y+2 = 2y+6 4y-2y = 6-2 2y = 4 y = 2
How do you solve 4y plus x equals 8
x = 4 and y = 0
4y + 7 = 19 ∴ 4y = 12 ∴ y = 3
y = 31
You cannot solve one equation in two unknowns.
You can't solve it. But you can simplify it to get: 4x+y=2
4y+2 = 2y+6 4y-2y = 6-2 2y = 4 y = 2
For 4y+228 = 352 the value of y works out as 31.
x = 5, y = -1
2y = 4x + 4y = 2x + 2
8x plus 4y equals 5 is 8x + 4y = 5.
You need three independent equations to solve for three unknown variables.