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4x+3 + 7x-1 = 90
11x + 2 = 90
11x = 88
x = 8
Sudut A = 4x+3 = 4(8) + 3 = 35 derajat
pelurus A = 180-35 = 145 derajat
4x+7x+3-1=90
11x+2=90
11x=88
x=8
4x+3
32+3=35
pelurus = 180
35+x=180
x=180-35
x=145.