Question

EX1 a-115=231 514-b=198 m+186=355 218+n=916 554+z=800 y-412=299

EX2 91-9x9-53-8x7-64:8+3=
192+63:7-15+6x9-21=

Answer 1

ex1

a=231+115 =346

b=514-198=316

m=355-186=169

218+n=916 ⇒n=916-218=698

554+z=800 ⇒z = 800-554=246

y-412=299⇒y = 412+299 = 711

EX2

91-9x9-53-8x7-64:8+3= 91-81-53-56-8+3= - 104

daca nu ai invata inca cu (-) este o greseala in ex

192+63:7-15+6x9-21=192+9-15+54=240