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3 years ago

Help me please Solve the system algebraically using substitution.

Mathematics

1 answer:

cluponka [151]3 years ago

3 0

Answer:

y = 5/3

x = 8/3

Steps:

y = x - 1

2x + y = 7

Substitute y = x-1

(2x + x - 1 = 7)

Simplify: 3x - 1 = 7

Isolate x: 3x - 1 = 7: x=8/3

Plug the valuse of x into the other equation (y = x- 1): y = 8/3 - 1

8/3 - 1 = 5/3

y = 5/3

y = 5/3, x = 8/3

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