Question

use the method of substitution to solve the system of linear equations 7a=4-b and 7a=7-b

Answer 1

if 7a = 4-b and 7a=7-b then 7a = 4-b=7-b
so 4-b=7-b
can you solve for b?

Answer 2

no

Answer 3

the system has no solutions
4-b=7-b implies 4=7

Answer 4

OK thank you so much

Answer 5

Those lines are parallel...

Answer 6

So they never intersect, and there are no solutions.

Answer 7

thank you