Answer:
Step-by-step explanation:
3x +1 = 2x +7 subtract 1 from both sides ( first)
3x +1 -1 = 2x + 7 -1
3x = 2x + 6 subtract 2x brom both sides (second)
3x -2x = 2x -2x +6
5x = 6
Answer:
option 2
Step-by-step explanation:
Answer:
x = 48
Step-by-step explanation:
The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.
156° is an exterior angle of the triangle, then
108 + x = 156 ( subtract 108 from both sides )
x = 48