a: =>x-35=0
hay x=35
b: =>2x=4
hay x=2
c: =>5(x-3)=25
=>x-3=5
hay x=8
d: =>2x-5=23
=>2x=28
hay x=14
e: =>2x=210
hay x=105
j: =>4x=20
hay x=5
\(5(x-35)=0\)
\(x-35=0:5\)
\(x-35=0\)
\(x=0+35\)
\(x=35\)
\(----------------\)
\(2x+11=15\)
\(2x=15-11\)
\(2x=4\)
\(x=4:2\)
\(x=2\)
\(----------------\)
\(70-5(x-3)=45\)
\(5(x-3)=70-45\)
\(5(x-3)=25\)
\(x-3=25:5\)
\(x-3=5\)
\(x=5+3\)
\(x=8\)
\(-----------------\)
\(41-(2x-5)=18\)
\(2x-5=41-18\)
\(2x-5=23\)
\(2x=23+5\)
\(2x=28\)
\(x=28:2\)
\(x=14\)
\(--------------------\)
\(2x-138=72\)
\(2x=72+138\)
\(2x=210\)
\(x=210:2\)
\(x=105 \)
\(---------------------\)
\((x-3):2=25\)
\(x-3=25.2\)
\(x-3=50\)
\(x=50+3\)
\(x=53\)
\(--------------\)
\(2.(x-55)=60\)
\(x-55=60:2\)
\(x-55=30\)
\(x=30+55\)
\(x=85\)
\(----------------\)
\(515:(x+35)=5\)
\(x+35=515:5\)
\(x+35= 103\)
\(x= 103-35\)
\(x= 68\)
\(---------------\)
\(16-2(15-x)=10\)
\(2(15-x)=16-10\)
\(2(15-x)=6\)
\(15-x=6:2\)
\(15-x=3\)
\(x=15-3\)
\(x=12\)
\(--------------\)
\(5x-x=20\)
\(4x=20\)
\(x=20:4\)
\(x=5\)
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