7. Simplify the following:
(a) (-7) x 5 + (-7) x 12
(b) 27 x (-8) + 27 x (-10)
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(a) (-7) x 5 + (-7) x 12
-35 + (-84)
-35 -84
-120
(b) 27 x (-8) +27 x (-10)
-216 + (-270)
-216 -270
-486
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