y = y
5x + 5 = 7x - 15
2x = 20
x = 10
y = 5x + 5
y = 55
Jadi :
→ a + b
→ x + y
→ 55 + 10
→ 65
OPTION D
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y = y
5x + 5 = 7x - 15
2x = 20
x = 10
y = 5x + 5
y = 55
Jadi :
→ a + b
→ x + y
→ 55 + 10
→ 65
OPTION D