Question

1) Determine as equações. a)3y-5=8y-4. b)5-2x=-10-12.
c)7y-5=3.(5-y)-12

Answer 1

a)3y-5 = 8y-4

3y -8y = 5-4

-5y = 1

y = 1/-5

y = -0,2

b)5-2x = -10-12

-2x = -10-12-5

-2x = -27

x = -27/-2

x = 13,5

c)7y-5 = 3.(5-y)-12

7y-5 = 15-3y -12

7y+3y = 15-12+5

10y = 8

y = 8/10

y = 0,8

Answer 2

boa tarde!

a) 3y - 5 = 8y -4
3y-8y = -4 +5
-5y=1
y= 1/5

b) 5-2x=10-12
2x=10-12-5
2x=-2-5
2x=-7
x= -7/2

c)7y - 5=3•(5-y)-12
7y - 5y=3•-12+5
2y=3•-7
2y=-21
y= -21/2
y=-7

❤