Question

Como resolver essa Quatro equações

5+2x=1
5x+3=7
x-3=1
2x-3=17

Answer 1

I. 5+2x=1
2x=1-5
2x=-4
x= -4/2
x= -2

II. 5x+3=7
5x=7-3
5x=4
x=4/5

III. x-3=1
x=1+3
x=4

IV. 2x-3=17
2x=17+3
2x=20
x=20/2
x=10

Answer 2

a)
5 + 2x = 1
2x = 1 - 5
2x = - 4
x = - 4/2
x = - 2
*****************************
b)
5x + 3 = 7
5x = 7 - 3
5x = 4
x = 4/5
********************************
c)
x - 3 = 1
x = 1 + 3
x = 4
*********************************
d)
2x - 3 = 17
2x = 17 + 3
2x = 20
x = 20/2
x = 10