Question

Hallar el valor de X que es la solucion de cada ecuacion
5x=90
7x= -21
10=-x
8x-7=1
3x+2=8
9=9+x

Answer 1

1) 5x = 90

x = 90/5

x = 18

2) 7x = -21

× = -21/7

x = -3

3) x = -10

4) 8x = 1 + 7

8× = 8

x = 8/8

x = 1

5)3x = 8 - 2

3x = 6

x = 6/3

x = 2

6) x = 9 - 9

× = 0