a) \(3.\left(2x+4\right)+2.\left(3x-3\right)=4x+94\)
\(\Rightarrow6x+12+6x-6=4x+94\)
\(\Rightarrow\left(6x+6x\right)+\left(12-6\right)=4x+94\)
\(\Rightarrow12x+6=4x+94\)
\(\Rightarrow12x-4x=94-6\)
\(\Rightarrow8x=88\Leftrightarrow x=11\)
b) \(5.\left(2x-1\right)-3.\left(2x-2\right)=2x+29\)
\(\Rightarrow10x-5-6x-6=2x+29\)
\(\Rightarrow\left(10x-6x\right)+\left(-5-6\right)=2x+29\)
\(\Rightarrow4x-11=2x+29\)
\(\Rightarrow4x-2x=29+11\)
\(\Rightarrow2x=30\Leftrightarrow x=15\)
mk làm lun
1,= 6x+12+5x-6= 4x+94
= 12x +6 = 4x+94
= 8x= 88
x= 11
2,= 10x-5-6x+6= 2x+29
= 4x+1= 2x+29
= 2x= 28
x= 14
