Answer:
9+6=?
-30+20=?
2+12=?
7x+-10=?
I'm not confident in the third one sryyy
Answer:
a. a - 9 = 6
a + (-9) = 6 OR 6 + 9 = a
b. p - 20 = -30
p + (-20) = -30 OR -30 + 20 = p
c. z - (-12) = 15
z + 12 = 15 OR 15 + (-12) = z
d. x - (-7) = -10
x + 7 = -10 OR -10 + (-7) = x
