x+x? 1.5=75? x=45?
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1
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x+a=b,x-a=b,ax=b,x? a=b
a-x=b? Answer? x=b?
ax+b=c,ax-b=c? Axe? b=c?
2?
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? 1? 2? 3?
Axe? b=c? ? b? ? x? Axe? ? ax=b? Answer? b? Answer? ?
? x? 1.5 10/ 15x? 2/3 times?
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x+2/3x=? 1+2/3)x=5/3x? 5/3x=75? 5/3? ? x? 75? 5/3=45? ? x=45?
3?
?
? Axe? b=c? Axe? b=c
? ax+b=c
0.5x+30=80? x? x? ? 0.5x30 0.5x50?
x 1? 0.5? x= 100?
? ax-b=c
8? 2x=28? 1? 2x28? 2? 14? x= 14 x= 14?