Step-by-step explanation:
x+y=-12
x-y=-2
solve by simultaneous equations multiply the second equation by -1
-x-y=2
subtract both equations
y=10
x+10=-12
×=-22
Answer:
Step-by-step explanation:
(–1)8 + (–1)7 + –16 + –14 – (–1)2 = -8 -7 -16 -14 +2 = -45+2 = - 43
I believe that the answer many be 43.75
Answer:
0.23
Step-by-step explanation: