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8 If y=3x-2 find x if y = 10
9 If A =
a+b
=a+b
2
find a if A7 and b= 10

Sagot :

Answer:

8)x=4

9)a=-3

Step-by-step explanation:

8)

y=3x-2

(10)=3x-2

+2       +2

12=3x

/3      /3

4=x

9)

A=a+b

(7)=a+(10)

-10     -10

-3=a

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