Answer:
X=18
Step-by-step explanation:
(1/2)*x-7 = (1/3)*(x-12) // - (1/3)*(x-12)
(1/2)*x-((1/3)*(x-12))-7 = 0
(-1/3)*(x-12)+(1/2)*x-7 = 0
x/2-1/3*(x-12)-7 = 0
(-1/3*2*(x-12))/2+x/2+(-7*2)/2 = 0
x-1/3*2*(x-12)-7*2 = 0
1/3*x-14+8 = 0
1/3*x-6 = 0
(1/3*x-6)/2 = 0
(1/3*x-6)/2 = 0 // * 2
1/3*x-6 = 0
1/3*x-6 = 0 // + 6
1/3*x = 6 // : 1/3
x = 6/1/3
x = 18
Answer: 83 and 97
Step-by-step explanation:
x+x+14=180
2x+14=180
2x=180-14
2x=166
x=83
83+14=97
Answer:
t = -6
Step-by-step explanation:
1 = -t - 5
-t = 1 + 5
-t = 6
t = -6
Answer:
70°
Step-by-step explanation:
A right angle is 90°. 90°-20°=70°
The answer is definitely not 7.777777
