Question

Rozwiąż równanie :

a) 5x+3 = x+19

b) 2+3m = 5-5m

c) 4(x+3) = 5x-19

d) 2(2m-3)+2m = 5(3m-m)+1

Answer 1

a) 5x+3 = x+19

5x-x=19-3

4x=16|:4

x=4

b) 2+3m = 5-5m

3m+5m=5-2

8m=3|:8

m=0,375

c) 4(x+3) = 5x-19

4x+12=5x-19

4x-5x=-19-12

-x=-31:(-1)

x=31

d) 2(2m-3)+2m = 5(3m-m)+1

4m-6+2m=15m-5m+1

4m+2m-15m+5m=1+6

-4m=7|:(-4)

m=-1,75

Answer 2

a) 5x+3=x+19   /-3
   5x= x-16      /-x
   4x= 16        /:4
    x= 4