Question

Determine os valores das letras a, b, c, d:

Answer 1

1***

a)
y=1+3
y= 4

b)
y=3+3
y=6

c)
y=5+3
y=8

d)
10=x+3
x=10-3
x=7


2***

a)
y=2.1-5
y=2-5
y=-3


b)
3=2x-5
3+5=2x
8/2=x
x=4

c)
-11=2x-5
-11+5=2x
-6/2=x
x=-3


d)
y=2.(-6)-5
y=-12-5
y=-17