Question

me ajudem nessas contas.
16x -6 -7x= 15+2x=
.
.
7y +5 -y +8=31
.
.
5. (3 -2a) =56
.
.
27 =3. (x + 30
.
.
26 + 2. (7x +8) -9= 67
.
.
6. (42+2) +7. (52+3)=66

Answer 1

a- 9x - 2x = 21

7x = 21 x= 3

b- 6y = 31 - 13

y = 3

c- 15 - 10a = 56

10a = 41 a = 4,1

d- 27 = 3x + 90

-3x = 63 x = -21

e- 26+14x + 16 - 9 = 67

14x = 34 x=7/17