Answer : easy try yourself I hope you can
Answer:

Step-by-step explanation:

Thr answer is the slope.
525-238= 287 people speak Welsh
287-135 = 152 males speak welsh
238-163 = 75 females do not speak welsh
135+75 = 210 total females
525-210= 315 total males
152/315= 0.48 ~~ 48%
First of all you have to make them equal to each other. What I mean is the following
3x+20=2x+40
Then you should just solve for x
Twice a increased by the cube of a equals b :
2a + a^3 = b