3х-15=х+3, 7-3х=х+11, 2(х+3)=х+13, 4(5-х)=3х-1, 3(х-2)=х+4, 5(х-1)=4х+3...

janka5555 @janka5555

July 2022 1 4 Report

3х-15=х+3, 7-3х=х+11, 2(х+3)=х+13, 4(5-х)=3х-1, 3(х-2)=х+4, 5(х-1)=4х+3

Answers & Comments

RealDantes 1) 3x-15=x+3    2) 7-3x=x+11 3) 2(x+3)=x+13
   3x-x=15+3 7-11=x+3x 2x+6=x+13
   2x=18 -4=4x 2x-x=13-6
   x=18/2 -1=x x=7
   x=9

4) 4(5-x)=3x-1 5) 3(x-2)=x+4    6)   5(x-1)=4x+3
   20-4x=3x-1    3x-6=x+4    5x-5=4x+3
   -3x-4x=-1-20    3x-x=4+6 5x-4x=5+3
   7x=21    2x=10 x=8
   x=21/7 x=5
   x=3

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