They are identities because they are true for ALL values of w and x.
If a equals 3 and b equals minus 5 then a minus b equals what
This cannot be solved. If you have 2 unknowns (a,b) then you must have 2 equations.
÷/÷ = +
a minus take away a minus makes a minus
In subtraction, the minuend minus the subtrahend equals the difference.
+ (plus) - (minus) / (divide) * (multiply) ^ (power) = (equals)
x = 4 and y = 7 which will satisfy both equations
{-1,-2}
No.
16
If a equals 3 and b equals minus 5 then a minus b equals what
This cannot be solved. If you have 2 unknowns (a,b) then you must have 2 equations.
The solutions are: x = -2 and y = 4
In subtraction, the minuend minus the subtrahend equals the difference.
If: x-y = 4 and x-3y = 4 Then by solving the simultaneous equations: x = 4 and y = 0 So the lines intersect at (4, 0) which will be a vertical straight line
The solutions are: x = 4, y = 2 and x = -4, y = -2
÷/÷ = +