Question

resolva essas equações do 1° grau
a)
$12 \times + 4 = 3 \times + 20$
b)
$2 \times - 6 = \times + 10$

c)
$7 \times - 8 = 2 \times + 11$
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Answer 1

a) 12x+4= 3x+20
12x-3x= 20-4
8x= 16
X= 16/8
X= 2


B) 2x-6=x+10
2x-x= 10+6
X=16




C) 7x-8= 2x+11
7x-2x= 11 +8
5x= 19
X = 19/5
X = 3,8