Question

Sooooooooos!!!!!!!!!

Answer 1

1) 9.4-8.2+0.6-2.8=9.4+0.6-8.2-2.8=10-11=-1

2) 7/9 *0.36+0.64*7/9=7/9 *(0.36+0.64)=7/9 *1=7/9