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5a-2a=-5-7
3a = -12
a = -12/3
a = -4
b. saya tidak tau...
c.4(x+2) -3(2)-5(x) = 5 (3x-2)
4x +8 -6-5x = 15x -30
-x +8 = 15x-30
-x-15x = -30-8
-16x = -38
x =-38/-16
x = lanjutkan sendiri tinggal membagikan kok
d.15m+2/3=5/3+14m
15m-14m= 5/3-2/3
-m = 3/3
-m = 1
m = -1
e.2,4(3-x)- 0,6 (2x-3) = 0
5,3- 2,4x- 1,2x + 1,8 =0
7,1 - 3,6x = 0
3,6 x = -7,1
x = -7,1/3,6
x = bagikan sendiri
maaf klo salah