Question

Solve by using substitution.
a =5b-4
-2a +10b = 5​

Answer 1

Explanation:

step 1

(a =5b-4)(-2a +10b = 5)​ equation

step 2

a=5b-4 solve for a

-2a+10b=5

-2(5b−4)+10b=5

8=5

step 3

8=5 simplify

step 4

8+(-8)=5+(-8) add -8

0=-3

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