Question

please answer this. urgent

Answer 1

Step-by-step explanation:

Answer of question no 15 is 15.

8×8-7×7

=64-49

=15

answer of question no 16 is x=110;y=70;z=110

x+y+z+70=360

so,

x+70+x+70=360

2x+140=360

2x=360-140

2x=220

x=220÷2=110