3x + 8
3x plus 2y can be expressed mathematically as (3x + 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
y
It is an expression in two variable: it is NOT an equation. There is no standard form for expressions.
Combine like terms. 6x - 2y +7.
7+4xz+52xz+2y=7+56xz+2y
-7
3x + 8
3x plus 2y can be expressed mathematically as (3x + 2y).
It is 2y + 22 = 2(y + 11)
x+2y = 7 2y = -x+7 y = -0.5x+3.5
Numerator = 7x + 14 = 7*(x + 2) Denominator = 3x + 6y + nx + 2ny = 2*(x + 2y) + n*(x + 2y) = (x + 2y)*(2 + n) There are no common factors between the numerator and denominator and so the expression cannot be simplified.
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