ozvikhe572
ozvikhe572
13-01-2021
Mathematics
contestada
how to solve this substitution
Respuesta :
Аноним
Аноним
13-01-2021
-5x+4y=11
substitute for x which is 5
(-5)(5)+4y=11
simplify :
4y-25=11
add 25 on both sides
4y-25=11
+25 +25
the 25 cancels out
so it would be 4y=36
and you divide both sides by 4
4/4 =36/4
which gives you (5,9)
x= 5 , y =9
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