The equation which has the correct sign on the product is 27(-5) = -135
Sign of product
- × - = +
- × + = -
+ × - = -
+ × + = +
Given equations:
27(-5) = -135
(-4)(-4) = -16
(-61) (3) = 183
22 × 4 = -88
Correct equation:
27(-5) = -135
(-4)(-4) = 16
(-61) (3) = -183
22 × 4 = 88
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