please bantu pusing matematika

f. -2x + 5 = 13
-2x = 13-5
-2x = 8
x = 8/-2
x = -4

g. -5(3x-7)+3 = 13
-15x +35 +3 = 13
-15x = 13-35-3
-15x = -25
x = -25/-15
x = 1,67