Question

3x+10=-7x+70
7y-3=100-3y
4x-0=-35x+170
12x-5x=75+60
Ayuda es para mañana ;(

Answer 1

Las x con las x y los numeros con los numeros:

1-. 3x+7x=70-10
10x=60
X=60/10= 6

2-. 7y+3y=100+3
10y=103
Y=103/10 =10.3

3-. 4x+35x=170
39x=170
X=170/39= 4.35

4-. 7x= 135
X=135/7= 19.28

Answer 2

Respuesta:

3x+10 = -7x + 70 | x = 6
7y-3 = 100 - 3y | y = 9.7

4x - 0 = -35x + 170 | x = 170/39
12x-5x = 75+60 | x = 135/7

Explicación paso a paso:

1)  3x+10 = -7x + 70
3x + 10 - 10 = -7x + 70 - 10
3x = -7x + 60

3x + 7x = -7x + 7x + 60

10x = 60

60 / 10 = 6

x = 6

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7y-3 = 100 - 3y

7y - 3 + 3 = 100 + 3 - 3y

7y = 103 - 3y

7y + 3y = 103 - 3y + 3y

10y = 103

103 / 10 = 10.3

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4x - 0 = -35x + 170

4x = -35x + 170

4x + 35x = 170

39x = 170

170 / 39 = 170/39 o 4.3589

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12x - 5 x = 75 + 60

7x = 135

135 / 7 = 19.2857