Solving an equation system

Solution is similar for both questions, but lets consider the 2nd part first:

Enter the equation 2x+4=x+y using the boolean equals ("<ctrl>" "=") - should show in bold typeface.

Add the symbolic evaluation symbol , either from the symbolic toolbar or with "<ctrl>""<shift>" "."( dot)

for the operator placeholder add "solve,y".

the result can be assigned to a new variable.

Note that because I have asked mathcad to assign the result to A it is warning that x is undefined.

This means that it does not have a numerical solution only the symbolic one as shown.

However, if you add a definition for x after the assignment to A and repeat the symbolic evaluation it can give a numeric answer that can be saved & used later.

The first problem is then an extension of this,

create a 2 row X 1 col matrix & enter the equations in the 2 elements of the matrix.

replace the equation ( "2x+4=x+y" above) with the new matrix,

replace the solve,y with a 1 row X 2 col matrix "solve,( x y )"

And it should solve the system.

If you want to use these values later in the work sheet, select all of the text in this region using the <space> key

"<insert>" will swap between the start & end of the region, insert ( a b) := at the beginning to preserve the calculated result.

Regards

Andy