Question

vamos resolver as seguintes equações do 1° grau com uma incógnita

a) 2×-8 = 8

b) 3× + 1 =9

c) 7y-4 = 10

d) 2t + 1 = 9

e) 5+7× = 19

f) 11+3y = 2

g) 3×+1 = 7

h) 9×-5 = 4×

i) 10× = 15+9×

j) 20 = 6×+32

k) 7×+1 = 15

L) 2×+7 = 9

M) -2 = 3-5×

N) 7×-3 = 4

O) ×-4 = 8

P) ×+7 = 15

Q) 4× = 24

R) 2× = 30

S) -26 = -5×+1

T) ×-4 = 14

U) 2×-27 = -×

Answer 1

a) 2x-8=8
2x=8+8
2x=18
x=16/2
x=8
b)3x+1=9
3x=9-1
3x=8
x=8/3
c)7y-4=10
7y=10+4
7y=14
y=14/7
y=2
d) 2t+1=9
2t=9-1
2t=8
t=8/2
t=4
e) 5+7x=19
7x=19-5
7x=14
x=14/7=2
f)11+3y=2
3y=2-11
3y=-9
y=-9/3=-3