Question

VALE 54 PONTOS!!!!

1) Resolva as seguintes Equações de 1º grau:

A)9x-3=5x

B)11x-13=64

C)17x+50=7x

D)12x+21=10x+16

E)3x+3-2x+2=-x-5

. OBS: QUERO COM OS CALCULOS

Answer 1

Olá! ✨

a) 9x-3=5x
9x-5x=3
4x=3
x=3/4 <---

b) 11x-13=64
11x=64+13
11x=77
x=77/11
x=7 <---

c) 17x+50=7x
17x-7x= -50
10x= -50
x= -50/10
x= -5 <---

d) 12x+21=10x+16
12x-10x=16-21
2x= -5
x= -5/2 <---

e) 3x+3-2x+2= -x-5
3x-2x+x= -5-3-2
x+x= -10
2x= -10
x= -10/2
x= -5 <---

Answer 2

A) 9x-3=5x
9x-5= 3
4x= 3
x= 3÷4 = 0,75

B) 11x-13= 64
11x= 64+13
11x= 77
x= 77÷11 = 7

C) 17x +50= 7x
17x-7x= -50
10x= -50
x= -50÷10= -5

D) 12x+21= 10x+16
12x-10x= 16-21
2x= -5
x= -5÷2 = -2,5

E) 3x+3-2x+2= -x-5
3x-2x+x= -5-3-2
-2x= -10
x= -10÷2 = -5