Question

a)-4s+8t+t-10s-5t

b)2,5x+3y+1,5y-4,5x

c)-17a+23a+7,5b-8.2a+b

d)3 1/2c+3/7d-4/5d-3 9/13c

Answer 1

 

a)-4s+8t+t-10s-5t = 4t - 14s

b)2,5x+3y+1,5y-4,5x = 4,5 y - 2x

c)-17a+23a+7,5b-8.2a+b = 8,5b - 2.2a

d)3 1/2c+3/7d-4/5d-3 9/13c = 5/26 c - 3/35d

Answer 2

a)-4s+8t+t-10s-5t=-14s+9t-5t=-14s+4t

b)2,5x+3y+1,5y-4,5x=-2x+4,5y

c)-17a+23a+7,5b-8.2a+b=8,5b - 2,2a

d)3 1/2c+3/7d-4/5d-3 9/13c=3 1/2c -3 9/13c +3/7d-4/5d=7/2c -48/13c+ 30/70d-56/70d=91/26c-96/26c -26/7c=-5/26c - 26/70d