Toán Lớp 6: a)3.(x+3). 2.(x+7=103
b)3.x=4.(x-12)
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Toán Lớp 6: a)3.(x+3). 2.(x+7=103
b)3.x=4.(x-12)
Comments ( 2 )
3x+9+2x+14=103
5x+23=103
5x =103-23
5x =80
x =80:5
x =16
=>x=16
3=4x-48
4x-3x=48
x=48
=>x=48