SOLUTION: Can you pls solve for a and b. I've tried and got a= -3, and b= 10, but the answer is a=10, b=3. I do not understand how they arrived at that answer. The equations are: a

SOLUTION: Can you pls solve for a and b. I've tried and got a= -3, and b= 10, but the answer is a=10, b=3. I do not understand how they arrived at that answer. The equations are: a - b =

Question 131201: Can you pls solve for a and b. I've tried and got a= -3, and b= 10, but the answer is a=10, b=3. I do not understand how they arrived at that answer.
The equations are: a - b = 7, and a - 4b = -7. Please solve for a and b and explain how you arrived at the answer. Thanks.
Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
X) a-b=7
Y) a-4b=-7
.
X) a=b+7
Y)
(b+7)-4b=-7
b+7-4b=-7
-3b=-14
b=14/3
.
X)
a- 14/3=-7
3a-14=21
3a=35
a=35/3
.
Did you copy the question incorrectly?
.
Ed
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