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dabizgaming7575
28.06.2019 •
Mathematics
Need ! due ! (1) -3x+6=-9 show work ( 2) 5m+4m=72 show work ( 3 ) 6d-10d=40 show work ( 4) 2(x+4)=30 show work ( 5)78=-2(m+3)+m show work
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Ответ:
Answer :
1. -3x + 6 = -9
-3x = -9 - 6
-3x = -15
x = -15 / -3
x = 5
2. 5m + 4m = 72
9m = 72
m = 72 / 9
m = 8
3. 6d - 10d = 40
-4d = 40
d = 40 / -4
d = -10
4. 2(x + 4) = 30
2x + 8 = 30
2x = 30 - 8
2x = 22
x = 22 / 2
x = 11
5. 78 = -2(m + 3) + m
78 = -2m - 6 + m
78 = -m - 6
78 + 6 = -m
84 = -m
m = -84
Ответ:
6/11
Step-by-step explanation: