Question

Tentukan nilai persamaan berikut,jika c=30
1.(3c-10):4
2.(2c+20)x(c-20)

Answer 1

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1. (3(30)-10): 4
=(90-10): 4
=80: 4
=20

2. (2(30)+20)x(30-20)
= (60+20)x10
=80x10
=800

Answer 2

1.(3c-10):4
=(3x30-10):4
=(90-10):4
=80:4
=20

2.(2c+20)x(c-20)
=((2x30)+20 x (30-20)
=(60+20) x 10
=80 x 10
=800