Question

6. Afià termenii necunoscuti:
a + 34 = 62
28 + a = 91
a-87 = 13
45-a = 26
a + (43 - 27) = 52
63 - 49 + a = 71
91 - 36-a = 27
a-(18-9) = 16​

Answer 1

$a)a + 34 = 62$

$a = 62 - 34$

$a = 28$

$b)28 + a = 91$

$a = 91 - 28$

$a = 62$

$c)a-87 = 13$

$a = 13 + 87$

$a = 100$

$d)45-a = 26$

$- a = 26 - 45$

$- a = - 19$

$a = 19$

$e)a + (43 - 27) = 52$

$a + 16 = 52$

$a = 52 - 16$

$a = 36$

$f)63 - 49 + a = 71$

$14 + a = 71$

$a = 71 - 14$

$a = 57$

$g)91 - 36-a = 27$

$55 - a = 27$

$- a = 27 - 55$

$- a = - 28$

$a = 28$

$h)a-(18-9) = 16$

$a - 9 = 16$

$a = 16 + 9$

$a = 25$

Answer 2

1. a+34=62
2. a=62-34
3. a=28

_____________

1. 28+a=91
2. a=91-28
3. a=63
4. ____________
5. a-87=13
6. a=87+13
7. a=100

__________

1. 45-a=26
2. a=45-26
3. a=19

__________