Westonci.ca is the ultimate Q&A platform, offering detailed and reliable answers from a knowledgeable community. Get quick and reliable answers to your questions from a dedicated community of professionals on our platform. Join our platform to connect with experts ready to provide precise answers to your questions in different areas.

x - (4x - 7) = 5x - (x + 21)

Sagot :

luana
[tex]x-(4x-7)=5x-(x+21)\ \ \ \ | omit\ the\ brackets\\\\ x-4x+7=5x-x-21\\\\ -3x+7=4x-21\ \ \ | subtract\ 4x\\\\ -7x+7=-21\ \ \ | subtract\ 7\\\\ -7x=-28\ \ \ | divide\ by\ -7\\\\ x=4[/tex]