Determine a raiz de cada equação
A) 5x+18=33. B) 3n/9-5=0
C) 4(6y+7)=15y-8.
D) 10x+21 -7=10+3x
E) 5z-40=55
G) 10x/2-2+10=2
F) 432b+14-301=12 H) 5(2x+10)+10-2=13
i)22g+5-3=54
J) 12k-4.6=12 k) 4x+2+36=10
L) 10d-25=47
M) 12x+13-27=12.4-8
Soluções para a tarefa
Resposta:
Explicação passo a passo:
a) 5x + 18 = 33
5x = 33 - 18
5x = 15
x = 15/5
x = 3
b) 3n/9 - 45/9 = 0/9
3n - 45 = 0
3n = 45
n = 45/3
n = 15
c) 24y + 28 = 15y - 8
24y - 15y = - 8 - 28
9y = - 36
y = - 36/9
y = - 4
d) 10x - 3x = 10 +7 - 21
7x = - 4
x = - 4/7
e) 5z = 55 + 40
5z = 95
z = 95/5
z = 19
f) 432b = 12 + 301 - 14
432b = 313 - 14
432b = 299
b = 299/432
g) 10x/2 -4/2 + 20/2 = 4/2
10x - 4 + 20 = 4
10x = 4 + 4 - 20
10x = 8 - 20
10x = - 12
x = - 12/10
x = - 6/5
h) 10x + 50 + 10 - 2 = 13
10x + 58 = 13
10x = 13 - 58
10x = - 45
x = - 45/10
x = - 9/2
i) 22g = 54 + 3 - 5
22g = 57 - 5
22g = 52
g = 52/22
g = 26/11
j) 12k - 24 = 12
12k = 12 + 24
12k = 36
k = 36/12
k = 3
k) 4x + 38 = 10
4x = 10 - 38
4x = - 28
x = - 28/4
x = - 7
l) 10d = 47 + 25
10d = 72
d = 72/10
d = 36/5
m) 12x = 24 - 8 + 27 - 13
12x = 16 + 14
12x = 30
x = 30/12
x = 5/2