The values of the number is 43
x+21=64
subtract 21 on each side
x = 43
Answer:
36
Step-by-step explanation:
because it is
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
The range of the answer is [-3,infinity) and {yly>=-3}
