plz ans me this question plzz guys tomorrow maths exam
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Answered by
3
Step-by-step explanation:
a) 2x+7=3x+9
2x-3x=9-6
-x=3
x=-3
b) 5x-20=x-100
5x-x=-100+20
4x=-80
x=-20
c)15+5x=18+4x
5x-4x=18-15
x=3
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Answered by
1
Step-by-step explanation:
2x+7=3x+9
= 2x-3x=9-7
= -x= 2
= x= -2
5x -20=x-100
5x-x= -100 -20
4x =-120
x =-30
15 +5x=18+4x
5x-4x = 18 -15
x = 3
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