Answer:
Identity property of multiplication.
Step-by-step explanation:
Identity property
Identity property of multiplication: The product of 1 and any number is that number. For example, 7 × 1 = 7 7 \times 1 = 7 7×1=77, times, 1, equals, 7.
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x is 0 or -7
- 4.9t + 22t= 1.5 is the answer