Jawaban:
1. 46
2. 70 derajat
3. 49
4. 43
5. 80
Penjelasan dengan langkah-langkah:
1. 2x-7=85
2x=92
x=46
2.(180-30-10):2=70
3. 180=(4x+1)+(5x-1)+6x
180=15x
x=12
<ABC=4X12+1
=49
4. 180=3x+3x-7+(2x-5)
180=8x-12
8x=192
x=24
<ACB= 2X24-5
=43
5. 180= (x+17)+(x+3)
180=2x+20
2x=160
x=80
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Jawaban:
1. 46
2. 70 derajat
3. 49
4. 43
5. 80
Penjelasan dengan langkah-langkah:
1. 2x-7=85
2x=92
x=46
2.(180-30-10):2=70
3. 180=(4x+1)+(5x-1)+6x
180=15x
x=12
<ABC=4X12+1
=49
4. 180=3x+3x-7+(2x-5)
180=8x-12
8x=192
x=24
<ACB= 2X24-5
=43
5. 180= (x+17)+(x+3)
180=2x+20
2x=160
x=80