If 7 x 3 19 then x 7 3 227 167 163SolutionGive equation i

If 7 x + 3 = 19 then x = 7 3 22/7 16/7 16/3

Give equation is f(x)=7x+3

Solve for x, subtract 3 on both sides. We get,

f(x)-3=7x+3-3

f(x)-3=7x

Now, divide with 7 on both sides. We get,

(f(x)-3)/7=x

But the given function f(x)=19

Then, x=19-3/7=16/7

Therefore, x=16/7.

(or)

Given that 7x+3=19

By using the subtraction property, subtract 3 on both sides. We get,

7x+3-3=19-3

7x=16

Now, divide with 7 on both sides. We get

x=16/7

Therefore, x=16/7.