Question

Zapisz jak najprościej ;D

a. 3b + (b+1)

b. 5a - (a+1)

c. 2x - (3*5-x )

d. 2a + (3a-2b ) + ( a+b)

e. 5a - (2-x ) - b-2x+5

f. 7k - (m-2n+k) -5k

Answer 1

A) 3b + (b+1) = 4b +1

b) 5a - (a+1) = 5a-a-1 = 4a-1

c) 2x - (3*5 - x) = 2x - (15 - x) = 2x - 15 + x = 3x - 15

d) 2a + (3a-2b ) + ( a+b) = 7a -b

e) 5a - (2-x ) - b-2x+5 = 5a  - 2+x  - b-2x+5 = 5a + 3 -x -b

f) 7k - (m-2n+k) -5k = 7k - m+2n-k -5k = k - m + 2n