Answer:
Step-by-step explanation:
Question 1:
First, write the equation out:
4(x+3)=7x-3
solve for x:
4x+12=7x-3
15=3x
x=5
Question 2:
Do the same on the second question:
30-x=3x-6
36=4x
x=9
Answer:
5400 m
Step-by-step explanation:
60 m/h x 1 : 30
=60 x 90
=5400
Answer:

Step-by-step explanation:

so the coefficient is 4

When we multiply 2 same variable we add their power

So the last answer is