Question

fund the value of : 30-2b when a= 8, b=10.​

Answer 1

Answer

30 - 2b

30 - 2(10)

30 - 20

10

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Answer 2

$→Solve \;by \;Substitution$

$→Let's\;solve \;your\; system\; by\; substitution.$

$a=8;b=10$

$→Step: Solve\;a=8\;for\; a:$

$→a=8$

$→Step: Substitute\;8\;for\;a\;in\;b=10:$

$→b=10$

$→b=10$

$→Answer:$

$→a=8\;and \;b=10$