Answer:
About 2.57
Step-by-step explanation:
[tex]21x-56=-2 \\\\21x=54 \\\\x\approx 2.57[/tex]
Hope this helps!
I got 2.5
Step-by-step explanation
1) add 56 to both sides to get 21x = 54
2) divide both sides by 21
3) you should get 2.5
