Question

(1)determine o valor da incógnitas

a)4×=36
b)7×-2×=20+5
c)4×=27-13
d)3-8=3×+2×
e)×2=16
f)2×+4-9=-3×120
g)2×-7=2×-7

(2)Resolva as equações

a)4×+2=38 c)5×-1=3×+11

b)9×=6×+12 d)2×+8=×+13
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Answer 1

1-a)

$x = 9$

b)

$x = 5$

c)

$x = \frac{7}{2}$

d)

$x = - 1$

e)

$x = 8$

f)

$x = - \frac{355}{2}$

g)

$x = - \frac{7}{2}$