no.3,4,5 gimana caranya

3) skor yg dperoleh =
(bnar*4) + (slah*- 2) + (tdk d jwab * 0)
= (36 * 4) + (8 * (-2)) + (6 * 0)
= (144) + (-16) + (0)
= 128

4) nlai yg d proleh
(mnang * 6) + (seri *(-2)) + (kalah *(-4))
= (20 * 6) + (5 * (-2)) + (5 * (-4))
= 120 + (-10) + (-20)
= 120 - 30
= 90

5) 12 - 17 = -5