Suatu fungsi f dinyatakan dengan f(2x-3)=4x+5.nilai dari f(-7) adalah.. #tolongbantu

f(2x - 3) = 4x + 5
f(-7) = ...?

2x - 3 = -7
2x = -4
x = -2

f(2(-2) - 3) = 4(-2) + 5
= f(-4 - 3) = -8 + 5
= f(-7) = -3

Misalkan a = 2x - 3
2x = a + 3

f(2x - 3) = 4x + 5
f(2x - 3) = 2(2x) + 5
f(a) = 2(a + 3) + 5
f(a) = 2a + 6 + 5
f(a) = 2a + 11
f(x) = 2x + 11

f(-7) = 2(-7) + 11
f(-7) = -14 + 11
f(-7) = -3