y = -2/5
4/9 + y when y=0.1 you answer is 0.544 or as a fraction it is 49/90
x=4 y=5 9x+7y=?? Replace: 9(4)+7(5)= 71
9 plus 7 equals 144. Generally, x plus y = x(x+y).
x = 3 y = 4 2x + y - 1 = (6) + (4) - 1 = 9
6
y = - 4x - 4
x=4, y=9 (4,9)
Y+7=9 equals 2+7=9.
Here x is equls to 9 and y is equal to 4
y=4
They are expressions.