Question

F(x)=10x-7

f(x)=3

find x

Answer 1

`f(x) = 10x - 7 \\ f(x) = 3 \\ 10x - 7 = 3 \\ 10x = 7 + 3 \\ 10x = 10 \\ x = (10)/(10) \\ \boxed{x = 1}`

• x = 1 is the right answer.

Answer 2

`f(x) = 10 x - 7......(1) \\ f(x) = 3......(2) \\ (1) = (2) \\ 10x - 7 = 3 \\ 10x = 3 + 7 \\ 10x = 10 \\ x = (10)/(10) = 1 \\ x = 1 \\ thank \: you`