3x*5x-2=4-2x*1
15x-2=4-2x
13x=2
x=6.5
Answer:

Step-by-step explanation:
To calculate an area of a rectangle, use the formula A=l*w. We know the width is 7m greater than the length. So w = 7 + x. So the area is A= (7+x)*x.
We also know the area is 170. Substitute this value for A and solve.
1 and 16/25 is bigger than 1 and 5/8
Long division is like a bus stop method if you know
so example the set out would be like this