Răspuns:
a) y=5
b) b= 56
c)g=9.5
d)a=0
Explicație pas cu pas:
[tex]a) \: (y \div 2) \times 3= 10 \times 3 \\ y \div 2 = 10 \\ y = 10 \div 5 \\ y = 5[/tex]
[tex]b) \: (7 \times 9 - b \times 5) - 9 \div 3 = 20 \\ (63 - b \times 5) - 3 = 20 \\ 63 - b = 20 \div 5 + 3 \\ 63 - b = 4 + 3 \\ - b = 7 - 63 \\ - b = - 56 \\ b = 56[/tex]
[tex]60 - 10 \times (37 - 4 \times g) = 50 \\ 10 \times (37 - 4 \times g) = - 10 \\ 37 - 4 \times g = - 1 \\ - 4 \times g = - 38 \\ g = 9.5[/tex]
