Răspuns:
Explicație pas cu pas:
a)
[tex]3a+3b=3\times(a+b)=3\times125=375\\[/tex]
b)
[tex]12a-12b=12\times(a-b)=12\times50=600[/tex]
c)
[tex]105a+105b-105c=105\times(a+b-c)=105\times2=210[/tex]
d)
[tex]4x-3y+5=15\:|\:\times3= > 12x-9y+15=45 \:|\:-7\\= > 12x-9y+15-7=45-7= > 12x-9y+8=38[/tex]
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Răspuns:
Explicație pas cu pas:
a)
[tex]3a+3b=3\times(a+b)=3\times125=375\\[/tex]
b)
[tex]12a-12b=12\times(a-b)=12\times50=600[/tex]
c)
[tex]105a+105b-105c=105\times(a+b-c)=105\times2=210[/tex]
d)
[tex]4x-3y+5=15\:|\:\times3= > 12x-9y+15=45 \:|\:-7\\= > 12x-9y+15-7=45-7= > 12x-9y+8=38[/tex]