Question

5. The length of one wooden plank is (3x - 7) m
and the length of another wooden plank is
(7x - 15) m. If they are joined together, find the
total length of the plank.



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explain it nicely .

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Answer 1

Answer:

3x-7

+7x-15

=10x-22

10x=22

X=22÷10

=2.2

Answer 2

Answer:

length of first wooden plank = (3x-7)m

length of second wooden plank = (7x-15)m

let the total length = xm

A to Q

(3x-7)+(7x-15)=x

3x-7+7x-15=x

(3x+7x)+(-7-15)=x

10x+(-22)=x

10x-22=x

10x+x=22

11x=22

x=22/11

x=2m. answer.

Step-by-step explanation:

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