Question

1)2x+36:12=53

2)2017-(x-7)=2016:2

3)70-12(2x-1)=10

4)250-10(42-3x):15=244      giúp mik nha

Answer 1

1: =>2x=53-3=50

=>x=25

2: =>x-7=2017-1008=1009

=>x=1016

3: =>12(2x-1)=60

=>2x-1=5

=>x=3

 

Answer 2

\(1,2x+3=53\\ 2x=50\\ x=50:2\\ x=25\\ 2,x-7=2017-\left(2016:2\right)\\ x-7=2017-1008\\ x-7=1009\\ x=1009+7\\ x=1016\\ 3,12\left(2x-1\right)=70-10\\ 12\left(2x-1\right)=60\\ 2x-1=5\\ 2x=5+1\\ 2x=6\\ x=3\\ 4,10\left(42-3x\right):15=250-244\\ 10\left(42-3x\right)=6.15\\ 42-3x=9\\ 3x=33\\ x=11\)