3 years ago

What is the solution for 2(4r+6)=2/3(12r+18)

Mathematics

1 answer:

kari74 [83]3 years ago

8 0

R = 1. Try it out yourself.

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How to work this problem

Mazyrski [523]

7x + 9y = - 27_________eq1
3x - y = 3__________eq2
Multiply eq 2 by 9 and then add the resulting eq with eq1.

eq2 x 9 gives us 27x - 9y = 27___________eq3

add eq3 with eq1 we get.
34x = 0.
where x=0/34
x=0.
substitute x into any of the above equations to get y.
substitute x into eq1. we get:
7(0) + 9y =-27
9y = -27
y= -27/9
y = -3.

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