Question

EQUAÇÃO DO 1° GRAU

Resolva:
a) X-3=5
b) X+2=7
c) X/3+X/2=15
d) X-7=-7
e) X-109=5
f) 15=X+1
g) X/2+X/4=2

Answer 1

a) X-3=5.

X=5+3

X=8

b) X+2=7

X=7-2

X=5

c) X/3+X/2=15

2X+3X=90

5X=90

X=90/5

X=18

d) X-7=-7

X=-7+7

X=0

e) X-109=5

X=5+109

X=114

f) 15=X+1

15-1=X

X=14

g) X/2+X/4=2

2X+X=8

3X=8

X=8/3