Tentukan himpunan penyelesaian dari A. 4x+5=2x+25 B. 3(4x+6)=10x-12 C. 4x+3/2=2x+6 Tolong saya bingung!

A. 4x+5=2x+25
4x - 2x = 25-5
2x. = 20
x. = 20/2 = 10
x = {10}

B. 3(4x+6)=10x-12
12x + 18 = 10x - 12
12x - 10x = -12-18
2x. = -30
x. = -30/2 =-15
x = {-15}

C. 4x+3/2=2x+6
kedua ruas di kali 2
2(4x + 3/2) = 2(2x + 6)
8x + 3. = 4x +12
8x - 4x. = 12 - 3
4x. = 9
x. = 9/4
x = {9/4}

Bab Persamaan Linear
Matematika SMP Kelas VII

a] 4x + 5 = 2x + 25
4x - 2x = 25 - 5
2x = 20
x = 10

HP = { 10 }

b] 3 (4x + 6) = 10x - 12
12x + 18 = 10x - 12
12x - 10x = -18 - 12
2x = -30
x = -15

HP = { -15 }

c] 4x + (3/2) = 2x + 6

○○ dikali 2 ○○

8x + 3 = 4x + 12
8x - 4x = 12 - 3
4x = 9
x = 9/4

HP = { 9/4 }