4х+5х+23=104 938-(х-115)=237

Question

4х+5х+23=104 938-(х-115)=237

Answer 1

9x = 81
X = 9

-x = 237 - 938 - 115
-x = - 816
X = 816

Answer 2

4х+5х+23=104
9х=104-23
9х=81
х=9

938-(х-115)=237
938-х+115=237
-х=237-938-115
-х=-816
х=816