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a_sh-v [17]
3 years ago
15

Solve for x . 3x +19 7x-19 50°

Mathematics
2 answers:
Alex Ar [27]3 years ago
5 0

Answer:

x=12

Step-by-step explanation:

3x+19

3(12)+19=55

7x-9

7(12)-9=75

75+55+50=180

motikmotik3 years ago
3 0

Answer:

x =12

Step-by-step explanation:

The sum of the angles of the triangle are 180 degrees

3x+19 + 7x-9 +50 = 180

Combine like terms

10x +60 = 180

Subtract 60 from each side

10x+60-60 = 180-60

10x = 120

Divide each side by 10

10x/10 = 120/10

x= 12

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