Question

Jika a = x + 3 dan b = 3x -5 tentukan hasil

a) a + 2b
b) 2a - b
c) 3a - 2b

Answer 1

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

Answer 2

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

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