Question

Resolva as equações:
A) 4x+11-7x= -11
B) 5x-(-x+22)= -4
C) 11x-(-3x+10)=4x+2
D) x+3 + x-10 =4
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2 3

Answer 1

A) 4x + 11 - 7x = - 11
4x - 7x = - 11 - 11
- 3x = - 22 . (-1)
3x = 22
x = 22/3

B) 5x - (-x + 22) = - 4
5x + x - 22 = - 4
6x - 22 = - 4
6x = - 4 + 22
6x = 18
x = 18/6
x = 3

C) 11x - (-3x + 10) = 4x + 2
11x + 3x - 10 = 4x + 2
11x + 3x - 4x = 2 + 10
14x - 4x = 12
10x = 12 simplifique (÷2)
5x = 6
x = 6/5

D) ) (x+3)/2 + (x-10)/3 =4
MMC (2, 3) = 6
3(x+3) + 2 (x-10) = 24
3x + 9 + 2x - 20 = 24
3x + 2x = 24 + 20 - 9
5x = 44 - 9
5x = 35
x = 35/5
x = 7