1) -3m+4n-6-7n-8m+10=...

2) 15a+7b-5c-(-11a)-12b+13d=…
3) (42n+35m+7)-(-50m-20n+9)=…
4) (5x+3)-(x-1)=…
5) (2y+15z)-(4y-8)=…
dijawab dengan benar caranya ya:D jawab dong buat besok

1) -3m+4n-6-7n-8m+10=…

Jawaban:

$1 \ - 3m + 4n - 6 - 7n - 8m + 10 = \ - 3m - 8m = - 11m \ 4n - 7n = - 11n \ - 6 + 10 = 4 \ \ - 11m - 11n + 4$

$2. \ 15a + 7b - 5c - ( - 11a) - 12b + 13d = \ 15a + 11a = 26a \ 7b + 12b = 19b \ \ 26a + 19b - 5c - 13d$

$3. \ (42n + 35m + 7) - ( - 50m - 20n + 9) = \ 42n + 20n = 62n \ 35m + 50m = 85m \ 7 - 9 = - 2 \ \ 62n + 85m - 2$

$4. \ (5x + 3) - (x - 1) \ 5x - x = 4x \ 3 + 1 = 4 \ \ 4x + 4$

$(2y + 15z) - (4y - 8) = \ 2y - 4y = - 2y \ \ - 2y + 15z + 8$