Answer:
Step-by-step explanation:
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Question is:
Fill in the blanks to solve
.
Answer:

Step-by-step explanation:
Given

Required
Solve
Multiply both sides by x


Make x the subject


Answer:
Step-by-step explanation:
Sum of all angles of triangle = 180
39 + 102 + x = 180
141 + x = 180
Subtract 141 from both sides
x = 180 - 141
x = 39
Start at 5 and go up 3 and move 4 to the right
X+(x+1)+(x+2)+(x+3)+(x+4)+(x+5)=393
6x+15=393
6x=393-15
6x=378
x=63
third one is 63+2=65