Penjelasan dengan langkah-langkah:
1)
= 3(7a - 5b) - 5(-5a + 7b)
= 21a - 15b + 25a - 35b
= (21 + 25)a (-15 - 35)b
= 46a - 50b
2)
= -5(6a - 5b) + 8(3a - 7b)
= -30a + 25b + 24a - 56b
= (-30 + 24)a (25 - 56)b
= -6a - 21b
3)
= -4(3a - 7b) - 7(2a - 5b)
= -12a + 28b - 14a + 35b
= (-12 - 14)a (28 + 35)b
= -26a + 63b
Jawaban:
1. 46a-50b
2. -6a-31b
3. -26a+63b
1. = 21a-15b+25a-35b
= 21a+25a-15b-35b
= 46a-50b
2. = -30a+25b+24a-56b
= -30a+24a+25b-56b
= -6a-31b
3. = -12a+28b-14a+35b
= -12a-14a+28b+35b
= -26a+63b
semoga membantuuu, jgn lupa jadiin jawaban terbaik yaaa ;)
(kalau ada yang bingung, tanya aja yaa, nanti ku jwb Insya Allah)
" Life is not a problem to be solved but a reality to be experienced! "
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Penjelasan dengan langkah-langkah:
1)
= 3(7a - 5b) - 5(-5a + 7b)
= 21a - 15b + 25a - 35b
= (21 + 25)a (-15 - 35)b
= 46a - 50b
2)
= -5(6a - 5b) + 8(3a - 7b)
= -30a + 25b + 24a - 56b
= (-30 + 24)a (25 - 56)b
= -6a - 21b
3)
= -4(3a - 7b) - 7(2a - 5b)
= -12a + 28b - 14a + 35b
= (-12 - 14)a (28 + 35)b
= -26a + 63b
Jawaban:
1. 46a-50b
2. -6a-31b
3. -26a+63b
Penjelasan dengan langkah-langkah:
1. = 21a-15b+25a-35b
= 21a+25a-15b-35b
= 46a-50b
2. = -30a+25b+24a-56b
= -30a+24a+25b-56b
= -6a-31b
3. = -12a+28b-14a+35b
= -12a-14a+28b+35b
= -26a+63b
semoga membantuuu, jgn lupa jadiin jawaban terbaik yaaa ;)
(kalau ada yang bingung, tanya aja yaa, nanti ku jwb Insya Allah)