⑴7x+3=3(5x+2)-2(-3x) ⑵5（x-3）=3(2x+2)-(2-x)

⑴7x+3=3(5x+2)-2(-3x)
7x+3=15x+6+6x
15x+6x-7x=3-6
14x=-3
x=-3÷14
x=-3/14
⑵5（x-3）=3(2x+2)-(2-x)
5x-15=6x+6-2+x
6x+x-5x=-15-6+2
2x=-19
x=-19÷2
x=-19/2