Răspuns:
c. (a +25 )×4 = 10 (43+a)× 7=63 (a - 17 )×3 = 27
a +25 = 10 ×4 43 + a = 63 ÷7 a-17 =27 ÷ 3
a+25 = 40 43+a=9 a-17 =9
a=40 -25 a= 43-9 a= 17+9
a=15 a= 34 a= 26
(54-a) ×6 =48 d.(25+24 ) ÷a=7 (49 +39 ) × a= 50
54-a= 48 ÷6 a= 49÷7 a= 88- 50
54-a=8 a= 7 a= 38
a=54+8
a= 62
(202 -121 ) ÷ a=9 (76 -68 ) × a=56
a=81 ÷9 a= 56÷8
a= 9 a= 7
Sper ca te am ajutat !
