Question

-x+ 2y = 10
-3x+By = 11

Answer 1

Would be the answer -3x + b5 + bx/2 = 11.

Answer 2

change the equation into one variable.

2 y equals 10 + x

y equals 5 + x by 2

now put that into the second equation

-3x + b parentheses 5 + x / 2 equals 11

-3x+b(5+ x/2)

-3x + b5 + bx/2 = 11