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4 votes
Q(3x)=5q(x)+8solve for x

User TeWu
by
8.1k points

1 Answer

3 votes

we have that

q(x)=7x-1

solve the equation

q(3x)=5q(x)+8

step 1

Find q(3x)

q(3x)=7(3x)-1

q(3x)=21x-1

step 2

substitute in the original expression

21x-1=5(7x-1)+8

21x-1=35x-5+8

21x-1=35x+3

35x-21x=-1-3

14x=-4

x=-4/14

x=-2/7

User Deadtime
by
8.0k points

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