Step-by-step explanation:
1st.
(7x+2×2-6x-4) - (2x+3×2-3x+11)
(7x+4-6x-4)-(2x+6-3x+11)
collect like terms
(7x-6x-4+4)-(2x-3x+11+6)
(x+0)-(-x+17)
multiply - by the bracket
x+0+x-17
collect like terms
x+x+0-17
2x-17=0
2x=17
divide both sides by the coefficient of x
2x/2=17/2
x=17/2
