Question

What is the sum of y and 42 is at least 150

Answer 1

`y + 42\geqslant150 \\ y \geqslant 150 - 42 \\ \boxed{y \geqslant 108}`

y≥108 is the right answer.

Answer 2

`y + 42 \geqslant 150 \\ y \geqslant 150 - 42 \\ y \geqslant 108`