Answer:
1.
( n + 4 ) - 9
- n - 4 - 9
- n - 13
2.
40 = x - 1
- x = - 1 + 40
- x = 39
Step-by-step explanation:
I duno if this is right...
Step-by-step explanation:
2x = x + 11
x = 11
Answer:
1/ (2×1)+(7×1/10)
2/ (6×1)+(3×1/10)+(5×1/100)
3/ (4×10)+(2×1)+(6×1/100)
4/ (4×100)+(3×1)+(7×1/10)+(2×1/100)
Answer:
x = 9
Step-by-step explanation:
Sum of a triangle is 180°.
6x + 1 + 6x - 14 + 9x + 4 = 180°
Arrange the like terms together and simply this equation.
6x + 6x + 9x + 1 + 4 - 14 = 180°
21x - 9 = 180°
Shifting '-9' to the other side of the equation gives you '+9'
21x = 180° + 9
21x = 189
Shifting 21 to the other side of the equation (to get x) makes it ÷21 (multiply)
x = 189 ÷ 21
x = 9
