Answer:
-12-9--7= -14
Step-by-step explanation:
1 -12-9--7=
2 -21--7= (minus negative equals plus)
3 -21+7=14
Step-by-step explanation:
5x
Добро пожаловать
Answer:
8
Step-by-step explanation:
Add 1/2 to both sides.
Answer:
m∠DEF = 50
Step-by-step explanation:
∠DEG = ∠GEF
3y + 4 = 5y - 10
subtract 4 from both sides
3y = 5y - 14
subtract 5y from both sides
-2y = -14
divide by -2
y = 7
Add 7 into the equations:
3y + 4 + 5y - 10
3(7) + 4 + 5(7) - 10
21 + 4 + 35 - 10
25 + 25
50
