Answer:
x=0
Step-by-step explanation:

This is a simple addition/subtraction question question
4+3 = 7 km 12-7 = 4 therefore he still has 4 km to go
Answer:
Step-by-step explanation:
<1 = <5 Corresponding angles.
<5 + <6 = 180° Angles making up the same straight line are supplementary.
<1 + <6 = 180° <1 and <5 are equal.
<6 = 180° - <1 If we know <1 we can easily find six. It is <1s supplement.
3y (y is the unknown number but it represents one number only... and also 3y represents 3 multiply by y)
X=60 and y=20
x and y can be many things that answers the question to 120