In maple, how to simplify the symbolic equation by substituting it into the equation? It's not a complicated problem Let z = a + BX / y, where M = x / y. find Z (m) Using Maple, we should get z = a + BM But which command of maple?

In maple, how to simplify the symbolic equation by substituting it into the equation? It's not a complicated problem Let z = a + BX / y, where M = x / y. find Z (m) Using Maple, we should get z = a + BM But which command of maple?

algsubs( x/y=m,z=a+b*x/y );

Simplification: (x + 2) ^ 5 - (X-2) (x-3) (detailed process)

（x+2)^5-(x-2)(x-3)=(x^2+4x+4)(x^2+4x+4)(x+2)-(x^2-5x+6)=(x^4+4x^3+4x^2+4x^3+16x^2+16x+4x^2+16x+16)(x+2)-x^2+5x-6=(x^4+8x^3+24X^2+32x+16)(x+2) -x^2+5x-6=x^5+8x^ 4+24x^3+32x^2+16x+2x^4+16x^3+48x^2+64x+...

Simplification: 5 (X-Y) + 2 (x + y) - 3 (X-Y)

5(x-y)+2(x+y)-3(x-y)
=5x-5y+2x+2y-3x+3y
=4x