Hey there!
[QUESTION #12]
EQUATION: 4x + 9 + 3x + 3 = 180°
4x + 9 + 3x + 3 = 180°
COMBINE the LIKE TERMS
(4x + 3x) = (9 + 3) = 180°
4x + 3x + 9 + 3 = 180°
7x + 12 = 180°
SUBTRACT 12 to BOTH SIDES
7x + 12 - 12 = 180 - 12
SIMPLIFY IT!
7x = 180 - 12
7x = 168
DIVIDE 7 to BOTH SIDES
7x/7 = 168/7
SIMPLIFY IT!
x = 168/7
x = 24
Therefore, the answer should be:
x = 24
[QUESTION #13]
EQUATION: 3x + 2 + 3x - 32 = 180°
3x + 2 + 3x - 32 = 180°
COMBINE the LIKE TERMS
(3x + 3x) + (2 - 32) = 180°
3x + 3x + 2 - 32 = 180°
6x - 30 = 180°
ADD 30 to BOTH SIDES
6x - 30 + 30 = 180 + 30
SIMPLIFY IT!
6x = 180 + 30
6x = 210
DIVIDE 6 to BOTH SIDES
6x/6 = 210/6
SIMPLIFY IT!
x = 210/6
x = 35
Therefore, the answer should be:
x = 35
Good luck on your assignment & enjoy your day!
~Amphitrite1040:)