43 is 5+ 2/10.
44 is 10+6+3/10.
45 is 8+0.4.
46 is 70+0+0.9
Answer: 23.5m
Step-by-step explanation:
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2x-4(x+1)=-13
1) we solve this equation:
2x-4(x+1)=-12
2x-4x-4=-12
-2x=-12+4
-2x=-8
x=-8/-2
x=4
2) we evalute x²-1
x²-1=4²-1=16-1=15
Answer: 15
