Question

Calcule as equações do 1grau
A)×+8=7
B)-3=+10
C)-×=9
D)4×=-12
E )13×=13
F)21=3×
G)4×=1
H)-3×=10
I)-40=-5×
J)6×=2×+16
K)3×-2=4×+9

Answer 1

Explicação passo-a-passo:

A)×+8=7

x = 7 - 8

x = -1

B)-3=+10

essa não tem o x

C)-×=9

x = -9

D)4×=-12

x = -12/4

x = -3

E )13×=13

x = 13/13

x = 1

F)21=3×

x = 21/3

x = 7

G)4×=1

x = 1 - 4

x = -3

H)-3×=10

x = 10 + 3

x = 13

I)-40=-5×

x = -40/5

x = -8

J)6×=2×+16

6x - 2x = 16

4x =16

x = 16/4

x = 4

K)3×-2=4×+9

3x - 4x = 2 + 9

-x = 11

x = -11