Pertanyaan

Hasil dari operasi 3 y + 2 − 7 3 y + 4 adalah ...

Hasil dari operasi $\frac{y + 2}{3} - \frac{3 y + 4}{7}$ adalah ...

$fraction numerator 2 open parentheses y minus 1 close parentheses over denominator 21 end fraction$
$fraction numerator 2 open parentheses 1 minus y close parentheses over denominator 21 end fraction$
$fraction numerator 2 open parentheses y minus 2 close parentheses over denominator 21 end fraction$
$fraction numerator 2 y minus 1 over denominator 21 end fraction$

N. Sopiah

Master Teacher

Mahasiswa/Alumni Universitas Pendidikan Indonesia

Jawaban terverifikasi

Pembahasan

$fraction numerator y plus 2 over denominator 3 end fraction minus fraction numerator 3 y plus 4 over denominator 7 end fraction equals fraction numerator 7 left parenthesis y plus 2 right parenthesis minus 3 left parenthesis 3 y plus 4 right parenthesis over denominator 21 end fraction equals fraction numerator 7 y plus 14 minus 9 y minus 12 over denominator 21 end fraction equals fraction numerator negative 2 y plus 2 over denominator 21 end fraction equals fraction numerator 2 open parentheses 1 minus y close parentheses over denominator 21 end fraction$