Respuesta :
Answer:
y=3
Step-by-step explanation:
Add the y and divide
7y=21
21/7=3
y=3
4y + 3y = 21
• Add the number that have the same variables. 4y+3y=7y
• 7y = 21 ...divide 7 on both sides and the 7’s will cancel each other out and leave left with....
• 21 divided by 7...
Answer: y = 3
• Add the number that have the same variables. 4y+3y=7y
• 7y = 21 ...divide 7 on both sides and the 7’s will cancel each other out and leave left with....
• 21 divided by 7...
Answer: y = 3