de la ex 3 a) si b) pls
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Răspuns:
Explicație pas cu pas:
b) (a+3)*4 = (b+7)*2 = 5*3
4a + 13 = 15 ; a = 1/2
2b+14=15 ; b = 1/2
b) 12*4 = a*3a = (b-6)*2
3a^2 = 48 ; a^2 = 16 ; a = 4
2b - 12 = 48 ; 2b = 60 ; b = 30