Răspuns :

Mirena30id

Răspuns:

2×(-2)+m=4×(-2)+3

-4+m=-8+3

m=8+3+4

m=15

b) 2m+1=7+1-3m

2m+3m=7+1-1

5m=7

m=7/5

Ella4521id

Răspuns:

a.

2x+m=4x+3

x=-2

2×(-2)+m=4×(-2)+3

-4+m=-8+3

-4+m=-5

m=-5+4

m=-1

b.

2mx+5(x-1)=7x+1-3m

x=1

2m×1+5×(1-1)=7×1+1-3m

2m+5×0=7+1-3m

2m=8-3m

2m+3m=8

5n=8

m=8/5

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