Jika a = x + 3 dan b = 3x -5 tentukan hasil a) a + 2b b) 2a – b c) 3a – 2b

A)(x+3)+2(3x-5)
=x+3+6x-10
=7x-7
b)2(x+3)-(3x-5)
=2x+6-3x+5
=-x+11
c)3(x+3)-2(3x-5)
=3x+9-6x+10
=-3x+19

#semoga bermanfaat

A = x + 3 ; b = 3x – 5
a) a + 2b = x + 3+ 2(3x – 5)
= x + 3 + 6x – 10
= 7x – 7
b) 2a – b = 2(x + 3) – (3x-5)
= 2x + 6 -3x + 5
= -x + 11 = 11 – x
c) 3a – 2b = 3(x + 3) – (6x – 10)
= 3x + 9 -6x + 10
= -3x + 19 = 19 – 3x