Karla is given the equation 10x + 15 = 20 to solve. She says the solution is 1/2
2 answers:
The answer is C.
you do the inverse of positive 15, which is negative 15. so put it on both side .
10x +15 =20
-15 =-15
to equal
10x =5
then divide 10 on both side
10x = 5
----- -----
10 10
x = 5/10 or 1/2
The answer is c because you need to isolate the x
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