Question

A)5 (2x+7)-1 =4 (x-5)+9
B)2 (x+1)+5 (x-1)=7
C)2 (-1)+3 (x+1)=4(x+2)
D)2 (2x+3)-5 (x+1)=8
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Answer 1

A)5 (2x+7)-1=4 (x-5)+9
10x+35 -1=4×+20+9
10x-4×=20+9-35-1
6×=-7
×=-7/6
B)2 (×+1)+5 (×-1)=7
2×+2+5×-5=7
2×+5×=-2+5+7
7×=14
x=14/7
×=2
c)-2+3×+3=4×+8
3×-4×=8+2-3
-1×=10-3
-1×=7
×=7/-1
d)4×+6-5×+5=8
4×-5×=8-6
-1×=2
x=-1/2