We know that angles 1 and 2 add up to angle 5
Angle 1 + Angle 2 = angle 5
Substitute in the equations and known values
3x+7 + x+3 = 70
Combine like terms
4x+10=70
Subtract 10 from both sides
4x = 60
Divide 4 from both sides to isolate x
x= 15
Now you can plug them back into the equations to get the value of the angles
Angle 1 = 3(15)+7= 52 degrees
Angle 2 = (15)+3 = 18 degrees
