Question

20-2×=100
3×-2×=600
2×-2-3=25
4×+3×+300=12×

Answer 1

20-2X=100
2X=100-20
2X=80
X=40


3X-2X=600
X=600

2X-2-3=25
2X=25+2+3
2X=30
X=15

4X+3X+300=12X
4X+3X-12X=300
7X-12X=300
-5X=300
X=300÷ (-5)
X= - 60