Therefore, y = 4 7 + 2y = 15 7-7 + 2y = 15-7 Subtract 7 from both sides 2y = 8 Divide by 2 to get y alone 2y/2 = 8/2 y = 4
7+2y=15subtract 7 from each side of the equal sign2y=8divide each side by 2y=4
7+4xz+52xz+2y=7+56xz+2y
x+2y = 7 2y = -x+7 y = -0.5x+3.5
3x + 2y = 7
If: 3x+2y = 5x+2y = 7 which is the same as 7 = 7 = 7 Then: 3x+2y = 7 and 5x+2y = 7 Subtracting equations: x = 0 Therefore by substitution: x = 0 and y = 3.5
Combine like terms. 6x - 2y +7.
7
3x = 2y + 7 The standard form is: 3x - 2y - 7 = 0
The slope of the line of 2x plus 2y equals 7 is (7/2x - 1).
If: 3x+2y = 5x+2y = 7 Then: 3x+2y = 7 and 5x+2y = 7 Subtract the 1st equation from the 2nd equation: 2x = 0 or x = o By substitution: x = 0 and y = 3.5
7(t - 2y)(t + 2y)