混合
[0]
(+7) ✕ (-9)
=
答え
x
-63
[1]
(-19) − (-15)
=
答え
x
-4
[2]
(-8) ✕ (+2)
=
答え
x
-16
[3]
(+10) + (-16)
=
答え
x
-6
[4]
(+6) ✕ (+6)
=
答え
x
+36
[5]
(+16) + (-8)
=
答え
x
+8
[6]
(-8) + (-12)
=
答え
x
-20
[7]
(+9) ✕ (+2)
=
答え
x
+18
[8]
(+9) + (+8)
=
答え
x
+17
[9]
(+17) + (+12)
=
答え
x
+29
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