Toán Lớp 7: -3.(x+2)+4.(x-3)=15 giúp em với
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Toán Lớp 7: -3.(x+2)+4.(x-3)=15 giúp em với
Comments ( 2 )
=>-3.x-3.2+4.x-4.3=15
=>-3x-6+4x-12-15=0
=>(-3x+4x)+(-6-12-15)=0
=>x-33=0
=>x=0+33
=>x=33
Vậy x=33