Question

1 point
5) If the sum of equations
2x+3y=7 and (a+b)x+(2a-b)ý=2
has infinitely many solutions,
then
O a =1, b=5
O a=5, b=1
O a=-1, b=5.
a=5, b= -1​

Answer 1

If the system of equations

2x + 3y = 7

(a + b) x + (2a – b) y = 21

has infinitely many solutions, then

A. a = 1, b = 5

B. a = 5, b = 1✓✓

C. a = – 1, b = 5

D. a = 5, b = – 1