Answer:
x = 2y + 6
Step-by-step explanation:
-x + 2y = -6
-x = -6 - 2y
x= 6 + 2y
x = 2y + 6
2x − 3 < x + 2
∴ x − 3 < 2
∴ x < 5
x + 2 ≤ 3x + 5
∴ 2 ≤ 2x + 5
∴ -3 ≤ 2x
∴ -3/2 ≤ x
<span>-3/2 ≤ x < 5</span>
Recall that for 
, we have
Replace 
with 
and we get
Lastly, multiply this by 
, so that
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Answer:
a. 3x +51=180
x=43
b. 3(43)+51 =180 51 degrees; 129 degrees
Step-by-step explanation:
3x +51 =180
3x=180-51
3x=129
x=43
