使方程左右两边相等的未知数的值是请选择DCBA:Q+y8y9d4z,S7d(R5y:o-r(q'm1X
A.方程,S7d(R5y:o-r(q'm1X
B.解方程,S7d(R5y:o-r(q'm1X
C.方程的解,S7d(R5y:o-r(q'm1X
D.等式,S7d(R5y:o-r(q'm1X