Question

Which system of equations has one solution?
a)–5x – 10y = 24
5x + 10y = 16

b) 3x + 4y = –7
–3x – 4y = 7

c)–12x + 8y = 16
12x – 8y = 16

d)–2x + 7y = –5
2x + 7y = –9

Answer 1

Answer:

answer is d

Step-by-step explanation:

a1/a2 not equal to b1/b2