Question

Resolva as equações:
A) 3x -3 -2x +5=7
B) 18x -43=65
C) 4m (m + 6) - m²= 5m²
D) 10 x + 5 - 3x= 18
2 4
E) 1 x + 24 = 5 x
4 8
F) 3 . (X - 2) = 4 . (3 - x)
G) 7 . (Y - 1) - 2 .( y - 5)= y - 5

Answer 1

A) 3x-3-2x+5=7
3x-2x=7+3-5
X=5

B)18x-43=65
18x=65+43
18x=108
X=108
———-
18
X=6

C)4m(m+6)-m^2=5m^2
4m^2+24m-m^2=5m^2
3m^2+24m=5m^2
24m=5m^2-3m^2
24m=2m^2
24m=m^2
———
2m
M^2=12


F) 3(x-2)=4(3-x)
3x-6=12-4x
3x+4x=12+6
7x=18
X=18
7
X= 2,5

G)7(y-1)-2(y-5)=y-5
7y-7-2y+10=y-5
7y-2y-y=-5+7-10
4y=-8
Y=-8
4
Y=-2


Espero ter ajudado