Q.4 Solve the following equations and check the answers-
(0) 3y/7=9/14 (systematic method)
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Answer:
2.4(3-x)-0.6(2x-3)=0
by multiplying outer digit to inner digits
= 7.2-2.4-1.2x-1.8=0
= 4.8 - 1.2x-1.8=0
= 4.8 -1.2 x = +1.8
by transferring -1.8 to LHS to get value of x
= -1.2x = 1.8 - 4.8
= -1.2x = -3.0
the -(minus) sign of both LHS and RHS will cancelled out by each other
so,
= 1.2x = 3.0
= x = 3.0 /1.2
= x= 3.0 ÷1.2
= x = 3 x 10/ 1x 10
=10 will be cancelled out
then,
x= 3/1
x=3
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