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Verified answer
Bab Persamaan LinearMatematika SMP Kelas VIII
4x + y - 13 = 0
y = -4x + 13
3x - 2y - 7 = 0
3x - 2 (-4x + 13) - 7 = 0
3x + 8x - 26 - 7 = 0
11x = 33
x = 3
y = -4x + 13
= -4 . 3 + 13
= -12 + 13
= 1
x = 3
y = 1
4x+y-13=0 /*3 ⇒ 12x+3y-39=0
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5y-67=0
5y=67
y=13,4
3x-2y-7=0
3x-2*13,4-7=0
3x-26,8-7 =0
3x-33,8=0
3x=33,8 /*10
30x=338
x=11,266666666667