180 Days of Practice for 4th Grade (Set of 3), Assorted Fourth Grade Workbooks for Kids Ages 8-10,

180 Days of Practice for 4th Grade (Set of 3), Assorted Fourth Grade Workbooks for Kids Ages 8-10,

Matematika Sekolah Menengah Atas Hitunglah nilai 3x + 2 jika:
a. x = 10,
b. x = -7.​

Hitunglah nilai 3x + 2 jika:
a. x = 10,
b. x = -7.​

Jawaban:

3x + 2

• x = 10

3(10) + 2 = 32

• x = -7

3(-7) + 2 = -19

Penjelasan dengan langkah-langkah:

Bagian A)

nilai x = 10

Maka

= 3x + 2

= 3(10) + 2

= (3×10) + 2

= 30 + 2

= 32

∴ Jadi, hasilnya adalah 32

Bagian B)

nilai x = -7

Maka

= 3x + 2

= 3(-7) + 2

= (3×(-7)) + 2

= -21 + 2

= -19

∴ Jadi, hasilnya adalah -19

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