Пошаговое объяснение:
а) (a + 6) + a = 18
2a + 6 = 18
2a = 18 - 6
2a = 12
a = 6
б) a + (a - 6) = 18
2a - 6 = 18
2a = 18 + 6
2a = 24
a = 12
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Пошаговое объяснение:
а) (a + 6) + a = 18
2a + 6 = 18
2a = 18 - 6
2a = 12
a = 6
б) a + (a - 6) = 18
2a - 6 = 18
2a = 18 + 6
2a = 24
a = 12