Question

resolva as equações abaixo :

a)2y + 5 = y - 1

b)7 ( x - 3 ) = 56

Answer 1

a)
2y + 5 = y - 1 
2y - y = - 1 - 5
y = - 6

¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
b)
7.( x - 3 ) = 56
7x - 21 = 56
7x = 56 + 21
7x = 77
x = 77/7
x = 11

Answer 2

a) 2y+5=y-1<br />2y-y=-5-1<br />y=-6<br />b) 7(x-3)=56<br />7x-21=56<br />7x=56+21<br />7x=77<br />x=77/7<br />x=11