Please help

-1.8 - 3.9=

A. -2.1
B. 5.7
C. 2.1
D. -5.7******

Please help

-7+5=

A. -2***
B. 12
C. -12
D. 2

2 answers

both right. good work.

Of course, your nearest calculator could have confirmed your results...
Thanks. I checked calculator but wanted to make sure