\(a,3.\left(2x+8\right)-\left(5x+2\right)=0\)
\(\Rightarrow6x+24-5x+2=0\)
\(\Rightarrow6x-5x=0-24-2\)
\(\Rightarrow x=-26\)
\(5.\left(7-3x\right)+7.\left(2+2x\right)=0\)
\(\Rightarrow35-15x+14+14x=0\)
\(\Rightarrow-15x+14x=0-35-14\)
\(\Rightarrow-x=-49\)
\(\Rightarrow x=49\)
Tìm x
a, 3.(2x + 8) - (5x + 2)=0 ............. Hok Tốt nhé ..............
\(\Leftrightarrow3x+24-5x-2=0\) ........ Nhớ k cho mik nhé .........
\(\Leftrightarrow x+22=0\)
\(\Rightarrow x=-22\)
b, 5.(7 - 3x) + 7.( 2 + 2x)
\(\Leftrightarrow35-15x+14+14x\)
\(\Leftrightarrow-15x+14x=0-35-14\)
\(\Leftrightarrow-x=-49\)
\(\Rightarrow x=49\)
