Answer:
x = 20
Step-by-step explanation:
x° + 2x° + (x+10)° = 90°
3x° + x° + 10° = 90°
4x° + 10° = 90°
4x° = 90°-10°
4x° = 80°
x = 80/4
x = 20
Answer:
-20 + 30x
Step-by-step explanation:
-10(1) = -10
-10(-3x) = 30x
new equation
-10 + 30x -10
-10 + -10 = -20
-20 + 30x
2/3 could equal 4/6 , 6/9, 8/12 , 10/15 , 12/18 ETC
8x + 20 - 11 = 4x - 3
8x + 9 = 4x - 3
8x + 12 = 4x
12 = -4x
-3 = x
X = -3
Answer:
x = -10
Step-by-step explanation:
<h3>4x + 11 = 3x + 1</h3><h3>-3x -3x</h3><h3>____________</h3><h3>x + 11 = 1</h3><h3> - 11 -11</h3><h3>____________</h3><h3>x = -10</h3>