Sagot :
a washer and a dryer cost 659$ combined. The washer costs 91$ less than the dryer, how much was the dryer?
washer --> x
dryer --> y
x + y = 659$
y = x + 91$
x + x + 91$ = 659$
2x = 659$ - 91$
2x = 568$ |:2
x = 284$
y = x + 91$ = 284$ + 91$ = 375$
The dryer costs 375$ and washer costs 284$
washer --> x
dryer --> y
x + y = 659$
y = x + 91$
x + x + 91$ = 659$
2x = 659$ - 91$
2x = 568$ |:2
x = 284$
y = x + 91$ = 284$ + 91$ = 375$
The dryer costs 375$ and washer costs 284$
W+D=659
W=D-91
---------------------------
(D-91)+D=659
D-91+D=659
2D=750
D=750/2=375
------------------------------
W+375=659
W=284
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So the dryer had cost $375 and the washer had cost $284.
W=D-91
---------------------------
(D-91)+D=659
D-91+D=659
2D=750
D=750/2=375
------------------------------
W+375=659
W=284
------------------------------
So the dryer had cost $375 and the washer had cost $284.