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180 = 19x + -10
180 = 19x - 10
19x = 180+10
19x = 190
x=190/19 = 10
mka nilai x adalah 10
180 = 4x + 7x - 6 +8x -4
180 = 4x + 7x +8x -6 -4
180 = 19x -10
180 + 10 = 19x
190 = 19x
x =