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Solving systems by substitution : y=5x-10 y=3x+8 I dont underatand how to solve it
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2 votes
Solving systems by substitution :

y=5x-10
y=3x+8

I dont underatand how to solve it

User Bogdan Rybak
by
8.5k points

2 Answers

2 votes
Because they both equal 'y' you can make them equal to each other.
5x-10=3x+8
-Add 10 on both sides-
5x=3x+8+10
-Minus 3x on both sides-
5x-3x=18
2x=18
-Divide by 2-
x=9
User Sparik
by
8.0k points
6 votes
-2 i think all you have to do is 5x divided each side 5x divide by 10=- 2
User Yogesh Meghnani
by
8.5k points
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