3a+4a=42. 70+800=10a
Answers
Answered by
1
Step-by-step explanation:
7a=42
a=42/7=6
870=10a
870/10=a
a=87
Similar questions
Math,
2 months ago
Math,
2 months ago
English,
2 months ago
Physics,
4 months ago
Computer Science,
10 months ago